Am I pregnant???

My boyfriend and I had protected sex a couple of days ago with a condom. He came inside the condom inside me but stayed inside of me so that I could also come. Can I get pregnant from that? And can his sperm leak out? My breasts started to hurt and I have a friend who just recently got pregnant and she informed me that her breasts hurt. When I noticed that my breast started to hurt it was 9 days before my scheduled period. It is now 5 days before my period and my breasts normally hurt before it but in unsure. Should I be worried? Am I pregnant?