ohkay. i had sex on friday. then on a saturday that saturday i got my period a little before i had sex. a week before i got my period & still to this day i was/am having a mixed appitite and im tired during the day not at night. my period lasted 4 days which is normal it ended yesterday[wednesday] it is thursday the day after my period ended i have brown spotting. i have had bad cramps before & through & after my period . What is going on ?