So I usually start my period @ the end of the month since I had mine @ the 1st of month but it waz different cuz I had sex for 6month nd been off birthcontrol since june nd I had sex on oct 5 nd it only lasted 3 days nd since then I've been really cranky nd bloated nd tired all the time nd I have sore nd breast nd nipples nd I have cramps nd back nd head ache nd leg aches what could this b someone help me