Pregnancy Info HOME

i need clarification on my conception date. me and my boyfriend broke up in october and got back together in december. i did see another man in november, i had s_x with him on 11/21/2008, i got my period on 11/30/2008, me and my boyfriend got back together the first week of December. i didn't get my period in December, i was only with my boyfriend in december, i was first going on my lmp date, but when i had the sonogram in my second month the due date was 09/01/2009, then i had another sono in my third month and it was 08/31/2009, and i used the Calculator that tells u when u might have conceived and it shows it was on december 8 or 9, and i was with my boyfriend on 12/07/2008, but i just got off my period on 12/5 or 6, i cant really remember, and when i look at charts its tells me based on my due date my period would have to been like 11/26 but i didn't get my period till 11/30. i guess im just scared that maybe im further along than the sono is indicating since its wrong on the lmp. if i did get pregnant on the conceptions dates its giving me, i just didn't know if u can get pregnant right after your period. im just feeling so guilty, please help. i just need some reassurance that im overreacting