I need help getting out of an abusive relationship?

I've been with my bf for three years. Even in the beginning things moved too fast, he wanted me to be his gf, to move in with him and all that jazz. Few months later, I found out that he wanted to cheat on me with a shemale, on my birthday, while I was out of town for the celebration. Since then, things have been way rocky. I asked him to tell me about the situation and even explained to him that if he were scared to admit anything about it, he could take his time, because he was "afraid that I would judge him as being gay" I told him I had no problem with exploring sexuality because I have done so myself. He continued to be shady about things and never really discussing anything with me.

I lost both of my parents and my older brother in the past four years (during college, recent graduate). I moved in with him and his parents in a new state because I don't have much supportive family except my grandmother who is sick with kidney disease. I have no friends, I never go to see my family. I moved here to be with him, expecting to find a job here, but it's impossible.

And the thing is, his entire family, especially his mother is judgmental and complains all the time about everything. She tries to put me down by judging my clothing, my family, and so forth. My family raised me to be respectable and wholesome, so idk.

All the while my boyfriend has called me out of my name, hit me, pushed me, choked me, bit me, you name it. And I try to defend myself, but I'm too small compared to him. He puts me down all the time in little sky ways. He forces me to exercise and I'm not overweight at all. I told him that it seems like he wants me to be perfect. He said he wants me to "perfect for me for the ways it matters to me." I've just never felt adequate or like enough for this guy since his need to seek out someone on my birthday.

I do a lot for his family and him. But it's never enough. I'm tired, depressed, suicidal, all this crap. I'm def not who I used to be.