Overreacting??

Saturday night I lost my virginity. I have been on the pill for three months and take it on time. We also used a condom and he did not cum inside of me. We also checked the condom and there were no holes at all. I've always had some slight anxiety about pregnancy, and have been worrying about it a bit. I start my period sometime in the end of this week. Should I be worrying? Or am I just overreacting? I'm pretty sure I'm okay, but I need some helpful reassurance. Thank you so much ladies