Harrassment by my husband and inlaws

I got married on 2015 now only having 1.5 years kid. My husband is a marine engineer. He worked after marriage also. After 2 years of our marriage he stopped working because of his health issue. He is completely normal now.Now he is doing business which gets not profit much. My problem is when he is in ship iam not allowed to my parents home he blackmailed me dat if u go I ll do something here like that.during holidays also he won't call me and go. I stayed in in-laws home only. After he left job also u should not go if my parents asked why u r not allowing he is not telling proper reason in front of them he is acting good. But during delivery time he left me in my home. He will weekly once to take material for his business and to see me. After delivery came to in-laws home on 2nd month. My mother in law wont support i wanna cook daily and I ll see my baby they won't touch if I asked shall I go to my home and take my husband hit me and speaking bad words about my mother and father. I fight them and stayed in my parents home for 4 months with baby. They din come and see me and my baby. After kept panchayat with our family elders I again came to in-laws home. They said u should allow her to her home if u don't like to go u don't go. Atleast allow her and baby with their parents with these conditions I came back. Now again he is doing the same he is saying if your father come and call u I will use harsh words to him. And also said if u want u go I will not allow my son. What shall I do? I'm not happy with him. I din have any privacy for us. Please help me out