Please for God's sake act mature, don't disclose your personal problems in public and you know this type of news spreads like a wild fire. Trust me it's going to do you a more harm rather than any good. First of all get all the proof and talk to your hubby one to one or seek advise from your close friends even if they are back home. If you really are 100% sure about it and have a proof, the best thing is to talk to your parents or his parents. But before taking any decesion think calmly and try to find out some solution by yourself instead of making fun of yourself. This world is very cruel, so please don't trust anybody outside. The only person you can trust is your parents. At times there are some problems in marriage, but I believe it's a sacred relationship so my sincere advise would be try to sort it out yourself first by talking to him directly on this issue. Give him some time to realise his mistake, if even after all your tries he is same then you definitely talk to your parents.

I really wish you all the best and pray everything goes well between you and your hubby.