Cheating case and abusive words used by brother in law

Hi my marriage was an arrange marriage after six months of engagement I got married in time of engagement period I guessed my my present husband was cheating me I informed my parents and too my mother in law but my mother in law blamed me that I doubt on her son and it's normal that the gap between engagement and marriage is too much so after 6 months my marriage was done later a two weeks I found my husband was having affair with his colleague a married women I informed my in-laws they said they don't no this before later after a big fight I consoled myself that my husband promised me he will not repeat it going forward after few month again and again he started doing it I went into mental stress but as fighting the love on him made me to give up and believe him but my husband started doing mental torcher he started to ignore me and started to booze and smoke a lot with that even his parents were more supportive to him when ever I questioned him they started to support my husband and complain to my parents saying I torcher him. My husband is a fitness trainer he was using streroids which led him to some medical issues I tried to stop that bit without knowing to me he was taking it becoz of this habits his health was not good seeing all this I tried much to stop him doing this things but I could not becoz of my mother in law as this kept going on other side my privacy was affected a lot of I play laugh or fight with my husband my mother in law started questions us a lot and interfering unnecessarily supporting her son this made my husband to be strong cheating me other side my mother in law use to check my room when iam out to office whether I kept clean or not and started complaining my husband and also she started talking badly about me with her relatives all this pressured me a lot once my husband reached home by 1.30 midnight fully boozed I started questioning him a fight started between us same way his mom interfered and after a day again my husband boozed fully and came home a fight started on that day the complete family rounded me up and started to corner me asked my husband to leave me at my mom house my brother in law used very abusive words like prostitue that this which hurted me a lot but I could not leave my husband becoz of my love him made me to bear all and stayed but the next day again I found out that my husband was using one more cellphone to talk to his keep this irritated me a lot I came out of the house and to my mom house now I want to file a case against all cheating me abusiving me pls do help me I have all the proofs of my husband having affair with that lady