I can't tell my boyfriend that he's hurting me
Oh no! Why can't you tell him?
Because I don't want to start a fight with him.
Nobody should ever hurt their partner in any way, so if your boyfriend is doing this, you need to tell him to stop.  If you are afraid that he will overreact and make things worse, then you are probably better off ending the relationship.  Your own safety is more important than your feelings for him.
I know but it's going to be a issue and a huge ass fight.
Do not be scared to leave, he is already abusing you. If you need bring the police in and use them to get your stuff and move out safely. You don't deserve any of this, but you need to be safe.