Last month my partner mastrbuted me(24oct),he ejaculate and use those hands i was werried that if i got pregnant! But next day(25oct) i got my periods,so it mean their is no egg remain and sperms can also just live inside the vagina from 5-6 days. So they are destroyed before my next ovulation gets complete. But the storage part of its, at this month(nov) i didn't get my periods!? So,i am pregnant or is their any other reason behind my missed periods?