From the Comments:

I hate my husband! I've been married for 21 years and have taken care of our three children, one of which is not mine and one of which is high-functioning autistic. I've also worked part time during all of that time. Now he tells me he doesn't want to have sex with me because I've grown too heavy. I've developed a severe nerve disease in my pelvis that makes it impossible for me to work as hard as I used to so the house is not spotless like it once was. He tells me I don't do anything and is angry because he has to "do it all". He says he is going to wait until our youngest is in college and then consider divorce. I'm terrified of that because how can I work a full-time job with my health so compromised? But at the same time, there's a part of me that relishes the idea of kicking him to the curb. Advice anyone??