My cycles are very regular I had a period on 09/ 01/ 2008.. and I had sex on 09/27/2008 and my period came on regular 10/01/2008.. now I had sex again 10/10/2008 I am pregnant now when did I conceive
My guess would be the 10/10/2008 date. Your doctor would be able to estimate that by the growth of the fetus. Has your doctor given you an estimated due date?