my boyfriend and i had sex during my fertile period (i just started researching all this stuff so i wasn’t aware of ovulation period and fertile periods). my last period was on june 30 and my period is pretty regular if not a day or two later but i just started having sex towards the end of june. it’s july 31 now, should i be worried? i’m not even out of high school and my dad would kill me if i got pregnant help!!