No, periods and ovulation don't ALWAYS happen like that, I mean, how else would you explain women who have irregular periods?
....they happen like that for the MAJORITY of women, but there are a lot of women who also have early ovulation, late ovulation, irregular ovulation...I'd go with what the test is giving you.
If you want to be really sure, I'd say use an OPT for about 3 months, then you'll be able to get a better idea of what kind of cycle you have. I used fertilityfriend.com for awhile to track my cycles...it used to be free, but its not anymore.
There's another site I can't remember the name of that helps you track your fertility and its free. :(
at 8:40 PM on Feb. 7, 2009