Given that you haven't given us enough information, we can't give you a definate answer.
But if you have to ask yourself that, I'm going to say that it's a sign you should leave.
Am I in an abusive relationship? What should I do?
Well, if you expect your partner to change....It's just not going to happen unless he / she wants to change.
leave that person.
I have learned from experience that when someone has to ask a question like this, chances are real good they are in a huge abusive relationship and the main advice is to get out ASAP and don't look back unless you want to go there. Now since your question does lack details, I can NOT tell you if and how this relationship could be saved so from what little you have said, its probably time to get out NOW while you still can and move on. Sure wish I knew if this an emotional or physical abusive relationship so I could help you more and if children are a part of this relationship, do get out or seek help from Police or a Womans Help Group. Good luck