Am I the A-hole for giving him the silent treatment?

My boyfriend and I have been dating for 2 and a half years (just for context I guess). We live together now, and generally have a pretty normal relationship. I've noticed however that every one in a while, when we're having sex, if I say stop he just like... doesn't. This is like the 3rd time this has happened. But tonight really made me upset. He's not physically aggressive at all as a person, but I'm a really small woman and this leaves me essentially powerless to his strength as a man, even without forcefullness. Anyways, I'm giving him the silent treatment because I was talking to him about something important to me and he kept insisting we have sex while I was talking. He started.. penetrating me.. and I was asking him to stop because I had to use the bathroom, it was hurting my badder and whatever else is in that area of my body on the inside, it was very painful and uncomfortable. I asked him to stop several times but he was just ignoring me and holding me down... he finished and I just took a shower. I feel so empty inside at this point, it's like I want to cry but I can't because I'm too mentally exhausted to even process it, it's been over and hour and my lower stomach is in a lot of pain from him doing that to me, but also it feels weak and its kind of grossing me out. I don't know if I'm overreacting or not, but I just feel really F'd up, physically and mentally from this happening again. He keeps asking me why I won't talk to him, but I feel like I should just let him figure it out himself. ****Please don't Judge me, I just needed to vent and see what other people have to say****

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Thank you all for your replies, I've been seriously thinking on all of them all day. I went all day and even now 1 day later, I'm still in pain, it hurts to bend, move, cough, laugh. I want to go to a doctor but I'm not sure what to tell them. I have been feeling empty all day and haven't been able to stop thinking about it. I told him he hurt me and all he said was "I'm sorry" passively, and has since decided to keep picking fights with me. I'm trying to work up the courage to leave.
Am I the A-hole for giving him the silent treatment?
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