Allyn,
So sorry to hear your sad story. It does take a very special kind of guy to understand how hard it is for someone to move to a completely different country. There are many of these guys on this forum. If you don't get the support you need then life here can be pretty horrible. There is also a suspicion that your brother in law may be a bit racist in his attitude to you.
I think the people who say "get out" don't really understand your situation - I am sure that you want to be loyal to your husband.
What kind of life do you have away from him? Do you have friends or colleagues you can talk to? Can you get out and around and do things on your own? It would really help to get away from the bad atmosphere at home - you could involve your husband too.
Good luck.