Boyfriend too big?

So my boyfriend and I have a pretty good sex life. Every time we see each other, we have sex. Well whenever we do, at the end of it I’m left hurting a bit. Now this usually goes away after a day or two. I don’t know if it’s because he’s pretty big and the biggest I’ve been with or what. I’m definitely turned on by him, I feel stimulated because we always do some foreplay first but even after trying some lube I was still hurting. Sometimes there’s some blood on the TP when I wipe after going to the bathroom. But it almost just feels like I’ve been stretched out too much. I don’t know if there’s a way to help this some more or what?