So me and my boyfriend had sex last week and we did it with a condom and without. I got really upset after we did it without because my paranoia was getting the best of me. He said he wasn't close in any way and I'm on the pill. I've had super tender breasts that I've not had before, I've had major backache and pains in my sides. It was my first time. Can someone please tell me if I'm just going through more puberty or is there still a chance I can be pregnant