Any advice that maybe I don't know...?

When I was young I was extremely skinny (age 19, 103 lbs.). I tried everything to gain weight. I ate like a horse and never gained an ounce. I figured I would always be skinny. I got married and had two children. After my second child I began packing on the weight. At first I was delighted but soon I realized the weight was not going to stop. I eat very little. I have tried everything you can think of. Fad diets, exercise, walking, counting calories, subliminal tapes, hypnosis, diet pills, powders, diet drinks, accupuncture, counting grams of fat, if it was known I tried it (cabbage soup, Dolly Parton soup, banana diet). I am now at 250 lbs.! I am also now disabled and my gross motor skills are very poor. I broke an ankle two years ago and it never healed right, I have fibromyalgia so my muscles are in constant pain, and have arthritis in my knees and hips. If I walk more then a few feet I am in extreme pain. I know what foods to eat, tonight I had two small fish filets, green beans, and cooked carrots. I did discover if I limit my food intake to less than 1000 calories a day I can lose but that is very difficult to continue for any length of time without becoming unhealthy.

When my son was 6 he weighed 36 lbs. He had his tonsils removed because they were constantly infected and after he recovered from his surgery he began gaining weight and it would not come off either even though he was very active as a child. He was ridiculed, bullied, and made fun of all through his school years. My son is way over-weight. We both hate it and don't know what else we can do. We are ashamed of our weight and my son eats less then I do. He is 5'9" and weighs around 280. He also has medical problems. Within five minutes after he eats, he gets severe stomach cramps and winds up in the bathroom in tears. He would rather have a salad for dessert then cake or pie. In fact, he eats very little desserts. Sweet things tend to make his teeth hurt.

We cannot leave the house together to do things because my husband cannot be left alone. He is trying to recover from throat cancer. Do you know anything else we might try? We are out of ideas and could really use some help.