I might be emotionally abuse? please people help!?

hi there,me and my boyfriend is in a relationship for last 2.5years and for last 6 months we are in a long distance relationship.He is in Uk for post graduation and I am in Bangladesh doing my A Level now,we both are Asian,we always have fight for some little issues and he was always very jealous and possessive about me and at first I thought it was romantic but later as time passed I realized its not but still I didn’t say anything to him because I wanted him to be happy with me and not tell me I am immature? I am 17 and he is 25 and we have this huge gape in age but he behaves like my father,for example if I want to go some where I have to take permission from him and 99.9% time he would say no when my parents is completely ok with this,and if I don’t listen to him then he will create a big sean and tell I am a bad girlfriend and a immature girl who knows nothing about life,and I have to ask for everything like what to wear,if want to go out with friends,want to go somewhere and even whom to be friends etc..we were actually ok until he went to uk, there he became more and more jealous and protective about me,he was like checking my phone call list every day and seeing whom I am talking to or texting to even checking my facebook account everyday to see whom I added and seeing the chat history..he always says its my fault and I am always wrong and immature and knows nothing about life! last week he went to a stripper club and wanted my permission I gave him and made a deal that he have to let me go to prom with my friends,he said ok(I never expected he would say ok when he is so jealous and possessive about me) and then he came back home at 5, and I was freaked out because its morning when he came back but he says that he was back at 3( here’s the point,since he was in uk when ever he comes home he wil text me or call me either he will sing in in skype to show me he is home and that day he came in skype at 5am uk time) we had this huge fight and then day before yesterday when I was saying something related to this stripper club topic he freaked out and started hitting me by bringing back the past like the mistakes I made example I talked with a guy he didn’t like or did something he don’t like etc and blaming me that I slapped with those guys etc..that time I felt like I had no power over me or there is nothing I can do by my self! I started hitting myself my cutting my hand and having some sleeping pills etc,and then when I told him I am sorry and made everything fine,then he went to coventry city to have a visit at his friend’s house,there a female friend of his also came and I just told him that there is shortage of room but whatever happens you both wont sleep at the same room,and he was like what the f**k you are talking about? don’t show attitude I know what I have to do don’t come to tell anything to me etc..I felt so bad that I could not even explain this in words! and then yesterday he was out for hangout with friends in coventry and when I asked that why didn’t u text ed me that you came out with friends he was like its not possible for me to do anything like this all the time and started yelling at me that I show attitudes etc,and says leave the topic, but when ever I will go out from my house to school or even anyplace with my parents I HAVE to call/text him and inform him about all this! and if I don’t he will start to create a big fight and show everything is my fault! and today when I said that I am organizing the senior prom and then all of the sudden he says I am not allowed to go and if I go then I have to suffer the way he did ! I again freaked out and started the fight...and even if I share my problems with my close friends and mates he freaked out and says I don’t need to do this he don’t like this,even if I goggle it or something he says I don’t need to do this he don’t like it..and then he says that until I am 20+ he wont let me do anything what he can do and will keep on controlling me! please tell me what should I do? I became a very dull student since it all started but sure I wasn't before and I behave very rude to my family now and I am always in depression all the time..I don’t feel doing anything now and it feels like I am suffering so bad and its so suffocating that no one will understand and every single moment I am dieing inside !! I tried to leave him but u can say I am not strong enough to leave him and I love him too much? help me please!! previously while we were fighting he was so angry that he called me bi**h slut and blamed me that I slapped with other guys while I was with him etc.....I am suffering! please help me!