Help!! I think I'm being abused

Mary • 18 & just want to be free.
I know it's long, but please read or at least skim! I am 18 years old & have been with my guy for a little over 4 months.. He started as this really sweet guy who understood me & adored me but he was also very very full on from the start! Fast forward a few months down the track & I'm not allowed to have guy mates, I can't go to parties without him, I can't have girls nights out at the club or pub, he has to be my background picture in my phone, he is with me every single night & when he isn't he says he needs to be with me all the time. He flips out over the tiniest of things, like me talking to a guy mate from work or messaging a guy who is a family friend. I can understand to an extent his jealousy & insecurities but it's how he goes about it that is unacceptable. From probably the second month of our relationship he started calling me names like, slut, cunt, bitch, whore, attention seeker, he told me he hated me & now understands why most my boyfriends before hand treated me so badly, in the last month he has gotten to the point where he has threatened my life, told me I won't find any better, that I am so fucked up I won't find anyone better, no one will love me, I'm pathetic, a penis hungry slut, said 'congrats once again you have ruined everything', blamed me for his depression, used my family problems & said 'no wonder your sister is so fucked up with a role model like you'. But even that isn't enough for him, now he is physically assaulting me, he hasn't hit me YET, but he has raised his fist multiple times, choked me, pushed me, pinned me down on the bed & pushed against my chest, grabbed onto my arm squeezing tight. He is 197cm, I am 164cm, he is 100kgs, I am 62kgs. I am no match to him & he tells me every time. 
Now my biggest problem is trying to get out, bc last time i broke up with him he threated to commit suicide & was in & out of hospital with the cops called, after every argument he cries & begs for forgiveness blaming the stress he went through last year for all his problems & claims he only needs me. I feel so stuck, so stranded. He will constantly call me, rock up to my house, has threatened to make my life hell, & even admitted that if I broke up with him again the only way he would leave me alone is if i got a restraining order...
I guess I am still not sure I am in an abusive relationship as he doesn't actually hit me, & I still blame myself for some of the things he does. But I know I need to get out, I just don't know how.. Please help 😢😥