I am so unhappy

My job literally is draining the life out of me. I feel like my relationship with my husband is suffering and I really want to have a baby but with my job I have to much stress and I can’t do It get NO days off. I have no free time. And I can’t even make a decent meal. I dream of owning my own business but how even get started? I feel as if I am falling into a deep deep depression and I am afraid if I keep letting it go on there no coming back. I would at least like to work from home...does anyone here do that? And if so how? Please please help me.