What are the possibilities of getting pregnant while on the pill and using a condom?

I am 14 and so is my boyfriend we have been together for 5 months now.We met at irish college during the summer and we've been going out since then on/off. He lives in kerry and i live in limerick. if u look on a map of ireland limerick and kerry are very far from each other and the part he lives in is nearly 3 hours away.we've been in a long distance relationship and i love him very much and him the same.Yesterday we managed to meet up and we had agreed we would have . we had been thinking about a long time and yesterday it finally happened. it was amazing it was my first time and his. I am on the pill for my skin originally and its also a contraceptive and he used a condom. I am obviously worried about getting pregnant and i am wondering what are the chances of me getting pregnant and advice if i do.. thank u :)