cervix pain and bleeding during bbd?

Mary

So for the past month, me and my SO will be bbd and it will begin to hurt, this never used to happen, and he's an average size. I just bite my lip and deal with it. well afterwards when I go to clean up a bit there is light pink spotting, it only lasts about 2 hours, then there is no more blood. I'm concerned, and so is my so. I have pcos, if anyone has any ideas, that would be great. Thanks