Chance of being pregnant

Hi all,

So I was just curious as to how likely I am to get pregnant. I am currently on the pill but due to being away and other circumstances I have not been taking it at the same time everyday. My boyfriend has been cumming inside of me for the last month or so and we rarely use condoms. Can me taking my pill a few hours late everyday increase my risk of being pregnant? Has anyone else been in this same position and ended up pregnant?