Conception Question

You count from the first day of your last mentrual period (.L.M.P). You don't count from conception.

Conception occurs in an unknown time frame. The egg and sperm have to meet and sometimes there is a vast space between them! Once they meet, there is awhile before they implant on the uterus.

Use the .L.M.P for calculating how far along you are.

Ok, i'll explain the reason I asked those questions then. I had intercourse with this person no later than november 9th but I did not ejaculate in her. October 18 next year I saw that she was pregnant and thought nothing of it. I don't know when she had the child but she looked quite pregnant at the time. Initially it doesn't seem possible but I wanted to be sure. Obviously that's 11 months and about 9 days and the rule of thumb is 9 months, so initially I didn't think anything more about it. But I am not sure how late you can be and how long it takes for conception to occur and if the max of those factors could equal that time frame. I'm just tired of thinking about it and i'm 99% sure it's not me but that small possibility drives me nuts. Anyone know if this is something I should look further into with this person. Last I knew she supposedly has a father for the child but didn't know if I was a possibility too. Thanks

Conception occurs normally 3-5 days after intercourse. So if you had sex the 9th she could have concieved the 9th, 10th, 11th, 12th, or 13th if the baby was yours that's when she would of had to of concieved. So she would of had to have been ovulating those days.
I recommend getting a paternity test to put your mind at ease. No use in freaking out over it with an easy solution of a paternity test. :) or you could ask her about it and trust her answer.

Thanks, I think that pretty much answers my question. To be generous I was counting out 3 weeks after intercourse first, then counting out 38 weeks form there. That would still be 8 weeks late which I don't believe is possible. I think 3 weeks would be plenty of time for conception and i've heard that a doctor won't let you go more than 2 weeks late anyway. Also, like I said, I don't know when she actually had the child either. I'm just counting to that day that I last saw her pregnant. Also there was no ejaculation but I know that's still not a guarantee. Thanks for the help I think I can put my mind at ease now.

Yeah there is no possible way sperm would live 3 weeks, not even 2 weeks not even more than 1 week. The most sperm could possibly live is 7 days and that's in the right cervical fluid and with extremely healthy and strong sperm which isn't to common.
The most common for sperm to live is 78 hours or 3-5 days :) conception occurs right when the egg meets the sperm. I hope that helps hun :)

Thanks, I was a bit confused on the reply from "ingi" where he or she said that after the sperm meets the egg "it takes a while before they implant on the uterus". I didn't know if that was another time frame after the sperm meets the egg before conception really starts and to count from there. Or, like you said, conception occurs when the sperm meets the egg and I can just count out from there. So if sperm can't last any longer than 7 days then she would've conceived no later than a week later if at all. Thats pretty much what i'm thinking unless there is this time it takes to implant on the uterus, then perhaps slightly longer? Anyway, starting two weeks after intercourse, then counting out 38 weeks from there, then to oct. 18 when the earliest she could've had the baby would be 9 weeks and 2 days late. That would be impossible right? Thanks, I definitely learned allot about this.