Harrassment by in laws

I am chartered accountant and working in reputed mnc as manager. I got married in Dec 2015. Immediately after 2-3 months we bought house jointly. I paid alomost 7.5 lacs for the 20% contribution. 1st 2-3 months my in laws and sister in law behaved very nicely with me. after that they started to harass me. They started to teach and say anything to my husband so that he will fight with me. The worst thing i was pregnant in 2nd month of marriage. all this harassment was started and continued during my whole pregnancy. slowly they started to demand my salary. when i refused to pay my salary they asked me to leave job and stay at home to do all household activity. My sister in law always stayed with her husband at my house. on 15th Aug they all fought with me very badly by using very abusing language. I got sever pain as that was my 7th month. I requested to take me to hospital but all of them were interested in fight. I ran from house and no one followed me that day. till date i am at my mom house. i was not able to stay at new house bought by me. after all this my husband contacted me after 1 month i.e. in September i got admitted in hospital for emergency. but my mother in law again started to change my husbands mind by saying anything. With all there was pre term delivery of my son and he got shifted to NICU, After his birth my husband used to behave properly till Dec 16 and again he stopped to contact us. Even he is not asking my baby. What should do. please suggest. 2-3 times i thought of committing suside. but again baby growing in me not allowed to do this stupid thing. everyone around is of opinion that my mother in law is doing all this shit. she said in front of me she asked my husband to get married with me only for my money.