Mental harassment by mother in law and husband

Hello Sir/Madam, I am married since Feb 2014 and 6 month pregnant. I am a housewife. My mom in law and husband harass me every day for every single thing in the house, thereby making my life miserable. Actually my mom in law has major influence on my husband n he agrees to whatever wrong she says. Whenever he returns from office she creates one or the other scene and lies to him for petty issues. She tells lies to him and ignites fight/ arguments between both of us. More over my husband is an alcoholic and few month back he had a great argument and fought with me as a result i got little injuries on my hand. After this , i went to my parents house. After few days he apologizes in front of my parents and relatives that he is not going to repeat the same incident. My parents gave 1 chance to him. After few months he again started fights with me. Right now i m a 6 month pregnant.Moreover at the time of marriage they demanded dowry which my parents fulfilled. Plz suggest legal implications in this matter and oblige. I will b very grateful to you. Thanks in advance....awaiting your legal advise....