Pregnancy scare

So me and my boyfriend have sex pretty often and multiple times a day if we can be bother my point is we are so stupid. We don't use any type of contraception and for the past year I guess we have just been extremely lucky but this time I'm even more worried. We hardly ever have sex when I'm highly fertile but this time round we did. I was 27% then 33% and we aren't 100% sure he pulled out on time the last time we did it. He never really pees between ejaculations or rather I just never knew it made an impact, I try to keep going until the last minute which now I realise is a stupid idea 😒 and will not being doing that again. It was my fault if he did come inside me but I'm really worried and need some support. I have a whole two weeks basically before my next period but I'm not sure if I can wait that long ://. I love him but there's no way I'm having a baby