Struggling with Weight and Medical Issues

I've been stocky my whole life. During high school I was very active with swim team, water polo, athletic trainer for football, marching band, and more..... I didn't engorge or eat badly or fast food. We were not rich and never ate out... Even then I was never under 200 lbs. Now Ive had 3 C-sections and a hysterectomy and am 41 and 295(-305)lbs. I barely eat because I have a hiatel hernia and gallbladder disease and had all my teeth pulled (have dentures but I can't wear them cause they are too big), plus I take Adderall for my ADHD. My pannus is like 40 lbs alone, of hanging skin that I can't get rid of because I have no control of my muscles since they have been severed several times. I need neck surgery but they won't do it til I lower my BMI...... help I'm so sick of this pain and suffering.....