Well...I would say that what you thought was your last period wasn't a period...Seeing as there aren't 11 weeks between nov.19 - jan 31. In order fopr you to be 11 weeks you would have had to conceive around nov. 15 !?! That how I figured out. If you got preg after ur nov 19 mensus, you would only be 10 weeks right now..---

Babycenter.Com

thats where I looked----i could be wrong tho

I went back and used the due date calculator. Remember that the first two weeks is your body preparing to ovulate. So as of today you are 10wk5d. If your last period was the 19th of nov, you ovulated around the 3rd of december. Hope this helps.
Ashlee

Andy-

i am 11 weeks and 3 days today. My last period was nov.14 so we are pretty close. I ovulated on nov. 28 and that is the day I conceived!

Hope that helps..

Maybe she just ovulates really soon aftert her . ??

When dr says you are 11.3 weeks pregnant, for example, they are counting from the first day of your last period. So at 2 weeks you are just now ovulating if you are on the common 28 days cycle. They do it this way because a person can ovulate any time pratically, (and with egg living 48 hours and sperm living 5 days inside the womans body) there is no way to know for sure the exact day the 2 should meet ---for every one is different. Most women on 28 days cycle ovulate on the 14 day before next period.



So...When you actually conceived is 14 days before next period is due(basically 14 days after last period--on 28 days cycle) or minus 5 days they say on the u/s scans. I hope this helps you all understand.



I have a way to find out due date just off the top of our heads also. Take last period add 14 days(on 28 day cycle) say dec 12 last period 14 days =dec 26th(probable conception date) add 9 months =sept 26th take off exactly 8 days which takes you to sept 18th this is your due date.



1st day of period 14 days
add exactly 9 months
minus 8 days