I am sorry you are feeling so depressed right now. If it wasn't for my daughter I probably wouldn't leave the bedroom either. Our kids really are angels.
I know your decision on to whether or not to get more money is weighing on you. Have you asked the lawyer how much it would be? I do believe you need to weigh the benefit. Sometimes you can't put a price on piece. If it is truly a life altering amount, I would say go for it. But if it's a few extra bucks in the pocket, I would probably let it go. I have been letting it go for years. I could probably get like $50 more bucks a month but it isn't worth it to me.
No decisions need to be made now. But the decision needs to give you some peace.
