Please help.. My last period was on april 7 of 2011, after my period was over i did it with my boyfriend, in april and in may. we broke up and i did it with someone else in june, and he ejaculated in me. then i got back with my boyfriend and i did it with him again in july and august.. both guys did it with no condom, according to my doctor im 5 going to 6 months pregnant from the last missed period date i gave them, but im not even that big. and i barely found out july 30 that i was pregnant, do you think i was already pregnant with my boyfriend before i did it with the other guy in june?