M.S.
I would suggest saving money first so that if things get worse you can leave .I agree that you should talk first to your husband and see if you can fix what is wrong try some kind of counselor maybe at church they may be low or no cost. If you can't work it out at least you can feel good about trying first. Sometimes when you are soooo tired you just can't think about anything else but what is wrong. Secondly if you do decide you want to separate for a while, try to stay in the home where the kids feel comfortable, in there home! Think about how your kids feel and make it stress free as possible kids can tell when things are not good at home and they act out more to get your attention.