Asmaraji,
you came here in "lawyers club of india" expecting some good lawyer can give you some good piece of advise, which may help you to come out of the problem. I know you are not expecting any moral preachings from us. Had you thought so, you would have visited to some religious site to get relief. So, my advice, as my profession demands, is purely legal.
1. Your marriage was held in April, 2011. I assume you are Hindu. If so, within one year either you or your husband is prohibited to file any divorce case. Exception is there, but not applicable in your case.
2. You have believable knowledge that your husband has extra marital relationship with some one else and also with his sister-in-law. Your assumption may be correct, but it is difficult to prove it in court. So, that piece of knowledge helps you to understand the wayward behaviour of your husband but not provide you any solution to your problem.
3. I do not know whether you are employed or earning some thing. If you are not employed, you have got a right to get maintenance from your husband.
4. It is a fact that your husband's relatives are harassing you for more money (dowry) to send you to U.S. It is domestic violence. In addition to this, your husband has got inherent duty laid down upon him from the first day of the marriage to take every responsibility of yours - regularly find out about your how abouts, provide for your maintenance, provide congenial atmosphere for you in matrimonial home. Shamelessly he abandoned all those responsibilities and put you in misery. It is undoubtedly domestic violence.
So, finally my advice to you is to file domestic violence case against your husband and other family members, who have been tormenting you. In this case, you can seek the reliefs according to your needs - shared household, maintenance, recovery of stri dhan, protection from any physical violence from the husband's relatives. In this case also, once you file the application, notices will be served on the other parties - husband and his relatives. There, you can ask the court for mediation / conciliation with the husband. There you can test his attitude - whether he is compelled to abdicate his responsibility or intentionally abandoned you. According to his response, you can proceed further. (Some people will ill advise you that if you filed DV case, how can mediation / cohabitation possible. You have first initiated court process so the chance for reunion is spoiled. They want to sketch you as vampire for going to court and abuse you in several ways and names) Do not believe them. Had your husband was a good piece of human being, he would have not put you in such misery within 4 months of marriage. So try your luck in DV case for reunion.
Wish you best of luck.
