Hi N4b231012, welcome to Psych Central. Sorry to hear you had a fight. Fights seem to happen when tensions in a relationship appear.

Sometimes people have too much of each other. A friend did a 24 hour time out and things got back to normal.

Depression is something that can take us by surprise because we have the outer trappings of happiness. You may find this forum of interest.
Depression - Forums at Psych Central

Do you have a therapist or psychiatrist you can talk to about this? If not, seeking out one would be safer than letting things slide.

The words you describe yourself seem to be saying I am in a serious situation. Getting help now could avert a more serious situation later.