Bipolar gettin hard to control and hirtin ng my relationship

So I'm 26 years old I recently just got a divorce in june. Now I an with he fther of my little girl. Here lately I feel like I can't control my emotions and I speak whatever comes on my mind. My boyfriend doesn't really understand and he says I miss him off and so on and so. So on. We argue about everyday over something so small. Sometimes he over reacts and it messes with my moods. Is there anything I can do to help control my moods better I am on meds as well