fighting alot!!

Well that pretty much sums it up. My boyfriend and I have been together for almost 4 years now. But lately I feel like all we ever do is fight. I'm at the point where I can't do it anymore... I love him to death I really do. but if we don't stop the fighting idt we will be able to stay together. most of the time it's just arguing But sometimes it just really gets out of hand and it gets physical. (on both parts I'm not just blaming him) I don't know what to do. I don't want us to end but if this don't stop I don't know what else to do...