Perhaps when things calm down a bit you could explain to him how it makes you feel. Even though you know he is worried about you, you need some breathing room. I used to feel like my bf at the time had complete power over me too and it was miserable. We had quite a lot of arguments because of it but eventually we managed to come to an agreement where I could get my space and freedom back. I might as well have been locked in the hospital the way he was carrying on.