Is it right to leave my marriage behind???

is it right to leave my marriage behind???have 3 kids, after learning that my husband is bullying me ,, he is not telling me that he is earning more than his salary of 7500 a month which is the only money his giving for the family,,while i was a working mother who budgets the family expenses,, keeping and spending his incentive of 8,000/month and 30,000 every quarter??for his own???and how would you feel that when you know he is the one paying for his sisters credit card and expenses in his family(mom & dad) while I was helping him with work aside from being a mom..,that everytime you ask for extra money he just says that's the only one i have,,even as a family we go out he tells me to be the one to pay for the food and expenses yet his mom is teaching my eldest 5 year old daughter " Y? is in it all of my dad's money are given to you??" why not by me expensive clothes??"am i a martyr wife??what shall i do??