Divorce

My marriage is a arranged marriage, and was conducted by my parents as my husband family denied to conduct the marriage.I was working in bangalore and he was working in chennai, i asked him whether he can relocate as my parents are in bangalore and he accepted. we started to search job from date of engagement and after marriage also our search was continuing and we had our marriage life every weekend in my home. he asked me not to leave the job, and after 5 months of wait i transferred to chennai and mean time i was pregnant. when i moved to chennai, my mil who was staying with his (middle son) moved to chennai to stay with us. with in a 15 days my husband was forcing me to change the surname and i denied. so with out my knowledge he was requesting my father to hand over the marriage certificate for change of name which he denied, and half day he was forcing my father so he sent a mail( related to his behaviour toward me for last 5 months). After that mil and my huband torture me ( were not allowing me to take proper sleep in night, as the fights starts only after 10 or 10.30), when the tortorue was high and he started to use abuse language he threaten to suicide if i leave the house. he raised his hand on me, and my parents when they hear about the same they came to take me along with them but my husband came to know about the same and he brought his relatives for decision and with there promise he left me with my husband and mil was sent back to mumbai. we stayed together for 3 months and lots of fight use to come inbetween us due to there brother and mother (who talk to them in phone), i went to my parents home for delivery after baby shower function(organised by me). on the day of delivery, my husband initiated the fight by taking photo and video call to his brother (who did not attend the baby shower function) and while my mom restricted he used very bad language and my mother was not able to control her temper so she also scolded him. After that last 6 months my husband is using abuse language such as we are equal to his hair in pvt parts, we are bastards, about me and my parents in phone, whatsup,messenger. He also said i have a sexual relationship and my baby is born between my dad and me and he needs DNA test. Now he is forcing me to send the notice for divorce. what i should do. my parents have withdrawn the PF and arranged the marriage for me, and they have taken care of me and my baby till now.