Oindrila want legal advice from lawyer in india

I was in a relationship with a guy, who forced me to have sex in the name of matrimonial promise. He forced me a number of times. I was mentally depressed by his behaviour and thought to commit suicide. Later I was told by his mother that his marriage was fixed since childhood with someone else and our relationship could not be successful. He blocked my number, fb, WhatsApp.
He just used me to satisfy his sexual need. Right now I am planning to complain against him at National Commission for Women.
Plz suggest me what to do.