Big fight...

Me and my bf had a really big fight last night it happend out of no where he started saying how when we fight its always my fault and kalled me a bitch for the first time in 8 yrs hes never said anything like that to me its hurting me i know its just a word but its just not like him he was being really mean blaming me for everything!!! It even got phisical.... What should i do i feel so sad....he was acting weird since the night before when he got home from work any thoughts?!