Am i depressed. It again. please help.

I feel mostly sad and don't have interest in doing anything. My anger is gradually increasing and I am unable to cope up with my studies. I have been like this since last 2 years, i.e. the time my 12th got over. Currently I am a second year college student. I took a drop off after 12th to prepare for competitive exams which I couldn't clear and then I got admitted to the college I currently am but I hate this college. I am in a relationship and that is not going well. When I go home I don't like it much coz of my uncle and other relatives. My family is kind of preservative type and so I have always felt like living in a cage. Since past 2 years I spend each day or night crying. My boyfriend isn't much supportive and he too gets angry many times. He is unable to cope with me and so in order to stay away from him and to let him hurt my self respect anymore I broke up. But he does loves me and I love him too. I have attempted suicide many times and still want to do it again. Please help.