Maybe pregnant?? Help.

I am 15. I have tender breasts, bloating, cramps and am quiet worried. I am on birth control and take it around 3:30 every day. I've never missed and we usually use condoms. This month after my last period, we haven't used a condom about 3-4 times but he always pulls out. My period is supposed to come around this Friday. Do you think I'm pregnant?