Pragnency worries.

My boyfriend is 50%
Less likely to produce than the average, we do still use protection (Condom) we use it correctly and it never broke or slipped of ect. My worries are, about 2 weeks ago, we had Sex multiple times In a weekend (with protection every time) but I was ovaluating. I ussualy don't have sex when I ovaluate but I forgot to check. Yesterday we had sex and it hurt me quite a bit, yes he is big but it felt like there was something inside me blocking the way. I was comfused. I allmost had to stop at one point because the pain, I thought it could be because he was on top and my legs were right up which does create a deeper penetration but I am not sure. Is there a chance I could
Be pragnent please help !