My partners has been finishing inside me

Sara
I have been on birth control since July 11th, 2016. I have recently entered a relationship and we have been having a lot of sex and he's been finishing inside me. And I'm afraid that I will eventually get pregnant if I keep doing this even on the pill. I've never missed a pill I take it everyday at 5 or a little past 5, 5:13 the latest except once I almost forgot it and ended up taking it at 8 but ever since that happened I've been taking it at 5. I'm scared I'm going to get pregnant. I would prefer he came somewhere else like my stomach and then just wiped it off. How can I bring this up with him? Have any of you let your man finish inside you and ended up not getting pregnant? I'm scared because nothing is 100% preventable.