I just don't know

I'm having a really tough day. On Wednesday, I went to the doctor and got told i had bronchitis. I called my fiance on the way home and we were talking about his work. I don't remember much of the conversation because I was exhausted and sick. I must have said something he didn't like because he hung up on me. I called him back with no answer and I called him once yesterday. I left messages saying I was sorry and to please be understanding because I was pretty out of it. He won't return my calls or even text me. I don't plan on calling him for a few days to give him some space. I feel like I'm constantly screwing up the relationship. I don't know if I can ever make him happy. I love him but it seems like we fight more than we get along right now. Most of the fights are over something I said or something I supposedly said. Lately, he hasn't been supportive at all with my depression. I feel hurt, a little scared, and alone. The worst part of all this is not knowing what he's planning on doing...staying with me or not.