You situation is a very complicated one but theres a way out somehow. The earlier you get out the better.
U identified your problems, now lets try and find solutions to the majour ones.U said you dont have enough money to get you to your home country n are litterary dependant on this monster. Is there any form of buying and selling you can do outside his suspicion that can raise funds for you to return home?If not , is it possible where you are to get hold of one of those women freeedom organisations that can fund you somehow?
Say you finally get the money, you are worried of being a burden to your own people... Is that situation of you being a burden worser than your abusive husband?If not then i guess you ought to get there without thinking much on what your own people wud say , unless if they will carry out an honour killing on u....