Start counting from the first day of your last period. If your last period was September 7th, that will count as day 1 up until today. That is how Dr.'s calculate how far along you are since it is impossible to know when exactly you conceived.
at 5:14 PM on Oct. 7, 2008
Are you regular...I was not regular. If we went my my last period I would have been 9 weeks when I went to the doctor, well I was only about 5 weeks. I am 18.5 weeks now. So if your not regular, there is no telling unless you have an ultrasound done. Good Luck with the Dr. visit.