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The Science of Conceiving a Girl

Posted by on Jun. 21, 2008 at 12:35 AM
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Let's take a look at the science of conceiving a baby girl. When trying to conceive a baby girl, it is first important to understand how conception works. The Y-carrying sperm (the one that results in a baby boy) is smaller and faster than the X-carrying sperm (the one that allows you to conceive a baby girl). The X (female) chromosome is slower, but more resilient. It moves through the acidic environment more slowly and safely to fertilize the egg in order to conceive a baby girl.

If you want to conceive a baby girl, your chances are higher when you have intercourse two to three days prior to ovulation, as the male sperm is faster and will arrive first, find that there is no egg and die off. In order to have the best chance of conceiving a baby girl, you need to pinpoint when it is that you are fertile. There are multiple ways to do this, and the more things you do, the better your chances.

PLEASE KEEP IN MIND - even if you did every single one of these, it's still not a 100% guarantee... but it helps your chances significantly. The natural rate to conceive a girl is 55%. If you follow the diet, and watch your ovulation time religiously, you can up that chance to 80-85%.

A fertility tracker system uses your saliva to help determine your daily fertile status. Levels of estrogen in your saliva indicate when pre-ovulation begins, and as estrogen rises, a woman will be able to view a full pattern of ferns with a peak just a day or so prior to ovulation.

As light ferning can begin to occur three days prior to ovulation, this is the best time to conceive a baby girl. With 100 times magnification (twice as strong as other lipstick model fertility monitors), the Fertility Tracker allows you to spot your fertile days and predict ovulation long before other models.

http://www.fertilitytracker.com/

You can chart your temperature and track your cervical mucous as well, also known as "Natural Family Planning.

Two methods of natural family planning are currently taught. The first is the mucus or ovulation method. In this method, the days just before and just after ovulation are determined by checking the woman's cervical mucus. When a woman is most likely to become pregnant, the cervical mucus is stretchy, clear and slick. The mucus during this time looks and feels much like an uncooked egg white. Shortly before reaching the "eggwhite" stage, most women will notice their they are "wetter", but it will not be stretchy discharge.

The second method is called the symptothermal method. With this method, the woman takes her temperature each day with a basal body temperature thermometer and writes it down on a chart. At the time of ovulation, a woman's temperature will rise slightly (about .9°F). The woman also checks the consistency of her cervical mucus like she does with the mucus method. She may also notice other changes, such as pain in the area of the ovaries, bloating, low backache and breast tenderness.

http://se.babycenter.com/preconception/suspectingaproblem/chartingyourtemperature/


Another step is to watch your diet. For a girl,
try a pre-conception diet rich in calcium and magnesium. Cut down intake of salty foods and red meat. This will make your vagina more friendly to the X sperm, and LESS friendly to the Y sperm. This means, no chips and steak. Yogurt and fish are great.

Sex position also is posed to have an effect. As the Y sperm are faster, but less resilient, especially if you've been following the diet, this can make a difference. For girl conception, try to have more shallow penetration. You want the male sperm to die before they reach the egg, and the females to get through, so the further from the cervix the ejaculation occurs, the more the males have to get through to get to the egg.


I'm trying to keep this purely scientific. Everything here is based off of scientific fact. There are other suggestions, such as the Chinese Lunar Calendar, but if you're seriously trying for a girl, go for science.


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by on Jun. 21, 2008 at 12:35 AM
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RanaAurora
by on Jul. 14, 2008 at 8:04 PM

Cervical Mucus - How it Relates to Your Fertility Cycle

Cervical mucus changes are monitored for determining when ovulation occurs through the cervical mucus monitoring test. As your cycle progresses, your cervical mucus increases in volume and changes texture. The changes in the mucus that is secreted from the cervix reflect where you are in your cycle. The consistency of your cervical mucus changes during the cycle due to hormonal fluctuations. You are considered most fertile when the mucus becomes clear, slippery, and stretchy. Many women compare mucus at this stage to raw egg whites.

Before collecting a sample, be sure to wash your hands first in order to prevent the transmission of germs.

The most common ways of collecting a cervical mucus sample are:

 

  • Inserting your finger into your vagina and collecting some mucus.

     

  • Using toilet paper and wiping the entrance of your vagina and analyzing the mucus collected that way.

     

  • The most accurate way to collect your cervical mucus is to insert your finger into your vagina and circle your finger around your cervix or as close as you can to the cervix. This will allow you to actually collect the cervical mucus instead of just it's wetness.

Monitoring the changes in cervical mucus is the only method that will not require looking back to the past few cycles for analysis, and also provide reliable results that you can trust when trying to conceive. You can do this yourself by getting a sample of your cervical secretions and stretch it between 2 of your fingers (the thumb and index finger) to test for the consistency. Examining the changes in your cervical mucus can help you pinpoint your time of ovulation and increase your chances of pregnancy.

Before Ovulation (low chance of pregnancy):
The first few days following menstruation, there will be little or no discharge present. You will feel dryness around your vulva. During this time, chances of getting pregnant are low.

Approaching Ovulation (chance of pregnancy):
The first discharge that does appear should be moist or sticky and should be white or cream in color. In the finger test, the mucus should break easily. You will only be able to pull your fingers about 1 cm apart before it breaks. During this transition time, first the mucus will become cloudy and slightly stretchy during the finger test (this means that it will still break before the fingers are stretched all the way). As time progresses, the mucus will become greater in volume.

Right around ovulation (high chance of pregnancy):
At this stage, mucus resembles egg whites. It is the thinnest, clearest and most abundant at this point in the cycle. Finger testing will allow the mucus to stretch quite a ways (several centimeters) before it breaks (if it breaks at all). ) The amount of this thin mucus will steadily increase until you experience your 'mucus peak'. This is the last day of this period where the chance of conception is high. It is closely tied to ovulation. During this phase, the sperm's survival rate is higher. It can survive in cervical mucus for up to 72 hours, a significantly longer time than during the rest of the cycle.

After Ovulation (low chance of pregnancy):
After ovulation, there is a marked change in mucus appearance. It returns to the sticky stage (does not stretch during finger test) and there is again a feeling of dryness around the vulva.

One caution for this test is that sperm can be confused with the mucus secretions and you could make wrong assumptions. Also, vaginal infections, medication, and birth control can alter conditions and should be taken into consideration when examining any vaginal secretions.

If you are interested in charting your cervical mucus to try and pinpoint your time of ovulation, you can download our free cervical mucus charts. You can download a blank CM chart in two different formats: PDF or Excel Spreadsheet

There are several cases where you may not be able to collect an adequate sample of cervical mucus. Medications, being over 35, & not ovulating can have a dramatic effect on your body's ability to produce the fertile cervical mucus.

If you are not able to determine your time of ovulation, you may have to use another ovulation prediction method, such as basal body temperature ( BBT ) charting or using ovulation tests.

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RanaAurora
by on Jul. 14, 2008 at 8:04 PM
Basal Body Temperature Charting

One of the changes that ordinarily take place in a woman's body as part of her menstrual pattern is that her body temperature is lower during the first part of the cycle. In most women it usually rises slightly with ovulation and remains up during the second part until just before her next period. Recording each day's temperature helps to indicate when ovulation has occurred.

The temperature method requires charting your basal body temperature (BBT), the temperature your body registers when you're completely at rest. The basal body temperature varies slightly from person to person. For most women, 96 to 98 degrees taken orally is considered normal before ovulation and 97 to 99 after. The changes are small fractions�from 1/10 to 1/2 degree. So it's best to get a special, large-scale, easy-to-read basal thermometer that registers only from 96 to 100 degrees.

Taking Your Temperature
Each morning take your temperature, as soon as you wake up�before getting out of bed, talking, eating, drinking, having sex, or smoking. Before doing ANYTHING. It is best to take your temperature at around the same time each day, so setting your alarm clock may be advisable. Be sure to follow the directions provided with your basal thermometer so you know how long you need to use the thermometer in order to gain an accurate temperature reading. Read the temperature to within 1/10 of a degree and record the reading. You can download a free bbt chart to record you temperature on.

You can also use Ovusoft fertility software to record your basal body temperatures and other natural fertility signs.

Charting Your Basal Temperature Pattern
Each reading must be recorded. As each day's temperature is plotted on the graph, you will learn to recognize your own pattern. Your temperature rise may be sudden, gradual, or in steps. The pattern may vary from cycle to cycle.

You must also realize that your basal body temperature can be influenced by physical or emotional upsets or even lack of sleep. In addition, illness, emotional distress, jet lag, disturbed sleep, smoking, drinking an unaccustomed amount of alcohol the night before, and using an electric blanket may affect your body temperature. Noting such events on the chart helps to interpret the readings. The free bbt chart we offer at BabyHopes.com will allow you to record these events. This will allow you to make better sense of your temperature readings.

In the beginning, you should get help in reading your BBT chart from a physician, nurse, or family planning specialist. In time, under supervision, you'll gain the knowledge and confidence to use the chart by yourself. Be sure to chart your temperature for at least three months before relying on this method.

Basal body temperature charting is quite accurate in detecting when ovulation has occurred, but can't predict when it's about to happen. Charting for several months will allow you to pinpoint when you ovulate better and in turn let you time intercouse before ovulation so your chances of getting pregnant are greater.

Sperm generally remain capable of fertilizing an egg for two to three days after ejaculation. There are even instances of sperm remaining active five or more days after intercourse. So if you have sexual intercourse several days before ovulation, there's a good chance that live sperm could still fertilize a newly released egg. Combining BBT with another method may help in trying to calculate ovulation in advance.

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Turtlekisses
by Member on Dec. 17, 2008 at 3:51 PM

I just wanted to add- Heat is another good thing. Male sperm have a harder time surviving in a hot environment.

I asked my husband to switch from boxers to boxer briefs (because they're tighter) 2-3 months before trying to conceive and we also took hot baths together before making love. That way not only was I getting warmer, he was also making it hotter for the male sperm. I did that on top of getting below a 5.0 pH and checking for ovulation (because I was irregular). We stopped on the day I got a positive ovulation test.

   Caleb Ashton

                    December 30, 2005

         August 12, 2004                                                      

GothicReverie
by Member on Dec. 18, 2008 at 8:24 PM

How many months did you TTC before succeeding?

Quoting Turtlekisses:

I just wanted to add- Heat is another good thing. Male sperm have a harder time surviving in a hot environment.

I asked my husband to switch from boxers to boxer briefs (because they're tighter) 2-3 months before trying to conceive and we also took hot baths together before making love. That way not only was I getting warmer, he was also making it hotter for the male sperm. I did that on top of getting below a 5.0 pH and checking for ovulation (because I was irregular). We stopped on the day I got a positive ovulation test.


Turtlekisses
by Member on Dec. 18, 2008 at 8:35 PM

I didn't have any trouble conceiving the first month we tried. I did plan this baby at least 6 months in advance doing research and everything.

   Caleb Ashton




                    December 30, 2005







         August 12, 2004                                                      




RanaAurora
by on Dec. 19, 2008 at 10:18 PM


Quoting Turtlekisses:

I just wanted to add- Heat is another good thing. Male sperm have a harder time surviving in a hot environment.

I asked my husband to switch from boxers to boxer briefs (because they're tighter) 2-3 months before trying to conceive and we also took hot baths together before making love. That way not only was I getting warmer, he was also making it hotter for the male sperm. I did that on top of getting below a 5.0 pH and checking for ovulation (because I was irregular). We stopped on the day I got a positive ovulation test.

True that!  Very good point.

While I've seen no scientific evidence, my dad has noticed over his years that men who have desk jobs (and therefore are warming their "family jewels") seem to produce daughters much more often than men with jobs where they'd be standing and walking.

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aliciatron
by on Feb. 11, 2009 at 4:52 PM


Quoting RanaAurora:


Quoting Turtlekisses:

I just wanted to add- Heat is another good thing. Male sperm have a harder time surviving in a hot environment.

I asked my husband to switch from boxers to boxer briefs (because they're tighter) 2-3 months before trying to conceive and we also took hot baths together before making love. That way not only was I getting warmer, he was also making it hotter for the male sperm. I did that on top of getting below a 5.0 pH and checking for ovulation (because I was irregular). We stopped on the day I got a positive ovulation test.

True that!  Very good point.

While I've seen no scientific evidence, my dad has noticed over his years that men who have desk jobs (and therefore are warming their "family jewels") seem to produce daughters much more often than men with jobs where they'd be standing and walking.

hm my dad had a desk job and had me his brother was a mechanic and had 2 boys.... interesting! my husband is a mechanic so i better get on him about wearing boxer briefs! oh and i've also noticed men who are more athletic have baby girls (which my husband isnt :p)

aliciatron
by on Feb. 14, 2009 at 1:07 AM

wait i thought the natural rate to conceive a girl is 49% and 51% for a boy? thats what the in-gender website says but i never researched it

RanaAurora
by on Feb. 14, 2009 at 7:29 PM


Quoting aliciatron:

wait i thought the natural rate to conceive a girl is 49% and 51% for a boy? thats what the in-gender website says but i never researched it

Globally, not counting IVF or other forms, it's 55% girl, 45% boy.

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me_smiley_face
by New Member on Feb. 24, 2009 at 7:55 AM
1 mom liked this

Hi, today is day 12 and we are trying for another baby, but I would really love to have a little girl. How can I increase the chances?

regards

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