well, today its feb 09th and i found out on jan 29th that i am 19 weeks pregnant but heres the problem i dont know who the dad is ... i broke up with my ex on aug but then we saw each other again in sep but on sep 28th i had sexual intercorse with someone else other than him if i was 19 weeks  and 3 days on jan 29th then when did i get pregnant because if its not from my ex then i should only be like 16 weeks on jan 29th not 19 weeks ..can ANYONE PLEASE HELP ME !?!?!?!? its life or death and right now i depend on it... :,(