Well you can do this next time 'cause it won't work now that you are pregnant. I keep a small calendar and wrote down P on each day I'm on my period. Then, I write S on each day we have sex. So, my doctors predicted that my baby was conceived on the 30th, but I looked in my calendar and we didn't have sex on the 30th, but we had sex on the 29th, so that's when I know I conceived.
at 3:11 PM on May. 1, 2009