I am currently 29 weeks pregnant. My LMP was 7/5/12, and I had sex on 7/3/12 & 8/4/12. I am almost positive that I got pregnant on 8/4/12 because, as I said, I had my period a month before & it was very heavy, which is normal for me. My concern is that maybe I'm wrong.. but if I got pregnant the month before I'd be further along, right? I'm thinking either I'm irregular or my egg lasted longer than normal- which is possible cause everyone is different. I just want to reassure myself of the approximate date I conceived. Please help!