I really don’t know what happened

So my bf was really off with me last night he said he was tired and feeling down about himself which I understand but it was almost like he was mad at me we were going to have sex and he started biting me really hard on my neck and my body which hurt a lot it wasn’t like small neck bites but full on I told him I needed a drink because it was unbearable which he wasn’t cool about but when i got back I just told him I didn’t want to carry on I was too scared to tell him I don’t know why maybe i wanted to avoid an argument but it all came out later when I couldn’t control myself from crying he apologised a lot and said he was really sorry and that he was trying to be kinky but I’m still just thinking wtf I’m full of bruises on my neck arms and legs and it hurts a lot but what do I do?