I think I’m being abused…

Trigger warning!!!!!!!!!!!!!!!!!!!! 10 9 8 7 6 5 4 3 2 1 Im trying to get away from this man who has been my live in friend for over 8 years but now he won’t let me leave. When I asked to go separate ways there would be impossible quotas to meet. I’ve tried to pack and sneak out but he would catch me and unpack my things and lay on top of me until I promised to stay mind you I’m only 150lbs he’s almost 350lbs….. I’m having to secretly text my mom for help(we don’t have a good relationship so that’s another fear) I’m sick currently and he tries to help but it’s not the right way(for instance I asked for daytime cough medicine he got me night time meds and started giving me a cocktail of pills but won’t tell me what all they are,I haven’t been able to stay awake for 3 days now) he’s started telling people that I treat him like trash and how he’s deserving of appreciation after paying only one month of rent after I lost my job from a car accident we were in but hasn’t told anyone that I’m the only person who can get a job though…we aren’t together and I never promised him anything like that but now he wants me to address him as my play husband and goes through my phone and blocks people like I wouldn’t notice. Every time I try to point out what’s wrong he ends up in tears and threatening to harm himself.