Mother-in-law Hell

Three months after my wedding was fixed my sister-in-law announced she was pregnant with her second baby. The baby’s due date was calculated on the same date as my wedding date.. ah! A strange miraculous coincidence! She also told us she could not attend the wedding in India because she is pregnant. During her pregnancy and while my family was preparing for the celebrations she would call me and tell me that she would want her mother to fly out the very next day to US after our wedding because she is scared of any complications and that everyone is worried about her. In Indian culture when your son brings home a daughter-in-law you welcome her and the mother in law is not expected to run away the next day which actually did not happen.
Since my husband and I are from two different cultural backgrounds and our parent’s houses are far apart (while I was engaged) she would tell me how everytime I go to India, my vacation will be ruined because not only (according to her) “you have to spend 50% of your vacation at my parent’s house but imagine how much time you will waste traveling”. She threw many things at me. I did not say anything at that time because I was scared of repercussions. Yes, I did share everything with my fiance’ at that time. It was so complicated at one point that I decided to call off the wedding and at that time his mom called me from India saying not to worry about her, she will be fine and I trusted them. I thought they understood what she was saying is wrong and they were going to help me patch things with her later on.
After we got married the mother in law comes to visit us for 10 days (remember she is already in US because her daughter had the kid). The first day my husband’s parents visit us… I cooked a big meal. Turns out the sister in law had packed lunch for them and my mother in law refused to eat what I made. That’s when it all began. My mother in law started telling me how great her daughter is in everything I did, my cooking, my house arrangement. Those ten days were hell. She would also tell me how I would be expected to raise my children per their customs. In the silence of night I begged my husband to support me but he told me he could not do anything, he would not hurt his parents.
These stories are two years old. The taunting continued… the worst part always was I was never too sure to guess my sister in laws mood. Everytime I would call her she could conveniently throw racial comments (weird that we are actually Indian but since my husband’s family is from the south my sister in law would make comments against languages/foods/etc in North). I turned to my husband because I could never say anything to her in return… I just did not. He yelled at her a couple of times , called his mother but I did not see anything stop. Everytime I called her she would manage to squeeze something and everytime I would call his mother in india she would only praise her daughter. I got sick of it, angry and I stopped talking to my husband’s sister. Then my husband forced me to make calls to her and I did.
At times she would be nice and at times she would just be herself.
Well the story today is, my mother in law cannot stop bragging about this insensitive brat she raised and throwing comments at me. We don’t have kids but I want to become a mother. I am thinking of leaving my husband … I love him but I don’t trust him anymore. My sister in law has this way of hiding things, just like she hid her pregnancy , she hid the fact that her parents i.e. my in laws may be moving to US for good. I know when they come here and if by that time (which could be mid 2009) I am pregnant (which by the ways I want to), they will be here permanently. I would not be allowed to talk to my kid in the language I speak, I would not be allowed to take care of him like I want to. My husband assures me that I should trust him but I don’t. I really want to leave him but I am scared of losing out on him in the process and not finding out someone caring like him. But again, he did not support me. He always manages to defend his family. I am really messed up. How much will I bend? Please help, should I leave him? They will take my kid away from me!