Hate being on top..

Kr
I literally hate being on top when me and my husband have sex. It's painful but hard to describe because it's not necessarily painful. But so uncomfortable. Like a burning pressure in my pubic area. I'm not sure if it's because I have adnoymosis and endometriosis that it does this - those make most other positions extremely painful but not like this feeling. 
Please tell me there is something I can do. My husband gets mad because missionary is the only position that doesn't hurt me and he gets bored. I also have no sex drive because it always hurts. 
Tips pleaseeeee