please help. ANYONE!:)

Ok so on feb. 10th my bf and I had sex twice w 2 different condoms but the 2nd time he took it off and put it back on before. He always pulls out before he cums. Both condoms didn't break either, And I had started BC like 6 days before that night, but took it 2 hours late. For the rest of this month I've been pretty good at taking it on time. I was suppose to get my period yesterday. And still haven't gotten it. I'm experiencing stomach aches, I'm more hungry, headaches, tiredness, my boobs feel a bit bigger and I'm getting acne. I'm also getting a little discharge. Should I be worried I'm pregnant or wait? I'm scared cause I can't be pregnant.  Anything helps!!!