Thanks for writing in.
Your symptoms are suggestive of depression
rather than any other illness. Cancer would typically cause weight loss
than weight gain. Comfort eating, difficulty sleeping, fatigue
all point towards depression. Since you have been through so much, I would suggest you give yourself some time. Slowly, things would start looking up once you decide that things are changing and for the better.
The pain in the abdomen is likely to be muscular and your excessive weight could be contributing to it. I would also suggest you see your general physician for an evaluation of the depression. At the end, drugs would help provide relief but its your own battle which I am sure you would win.
Hope this helps