Divorce and child custody question

Its been 4years of my marriage, due to lot of difference and lack of trust and family domestic violence. Looking for a divorce from my husband. Now i have 2 months baby. Post my delivery my inlaws and husband did not allow my parents to see me. Due to which i was in kind of mental disturbance and which lead to argument and i have came to mother house when baby was 1 week. Also few days back my husband forced me to give a registered GPA for the 3 joint hold property we had. I am worried now as how to does it affect when i apply for divorce. Hope he does not miss use the GPA that i have given to him. Also he claims its his earning property. ( His earnings were saved and my earning is spent) Where even i have contributed as i am working. All my earning post marriage and before marriage has be used and spent and invested. Which he does not care for it. Please adivse. I am scared to go back. As they till take my child or will separate me from the child. I will lose my 30 lac of earning of last 4 years. Though i am not a demanding person. He has 2 dependent sisters and my mother in law. They control him a lot in related to our martial life and husband does not like my parents and family circle.