please help

I'm on bc pills and have been for a little over a year! I missed one pill at week one and I started bleeding like a heavy period. I got horrible cramps , nausea , headaches , no appetite! My boyfriend busts inside me all the time we have sex almost every other day. It's now week 4 and I just stopped bleeding maybe two days ago. Could I be pregnant ? Also now I'm sooooo hungry and emotional please help