Victoria,
I am SO sorry that it has come down to this but it sounds like you had no other choice- you couldn't stay in such a toxic situation. Maybe they'll eventually realize how they've treated you, and you can hope for that, but you couldn't continue to allow them to treat you so badly. As much as you were doing for them, especially your mother, I imagine they'll realize pretty quickly what they've lost. Speaking as a mother, there's no way I would ever kick my son out unless he was doing some really bad things while living in my home. But, if he was sick- no way. And if he didn't have his wife to take care of him if he had a chronic health problem (and even if he did, we'd still be there doing what we could to care for him), we would be moving him right back home and taking care of him. That's just what people should do with family, especially their child. I'm sure you'll be better off and happier where you are now.