Just being cautious

I am 17 years old and I had sex with my boyfriend around the end of December. It was my first time and we did it with a condom but it hurt so he took it off. He pulled out before he was about to come. But my breasts are really tender about 2 weeks ago, and I've had food cravings lately. I've been tired and sleeping a lot (hopefully from my exams that are coming up) my period should be here in a few days. I don't know I'm just worried I live in a strict house and I should be graduating this year. Someone help?