Type 2 diabetic, gain weight but, no appetite. eat very little. average activity. work, play with kids, etc. hypothyroidism?

Possible, but: Thyroid level is easy to check. If you're gaining weight, you're still eating more calories than you're burning off. It takes 3500 calories to gain or lose a pound.

Weight gain: If your TSH is normal, you may be gaining weight due to edema formation, or water retention. In that state, you would be gaining 1-2 lbs/day and have to get up at night several times to urinate. Have your physician evaluate you for edema, which could be caused by proteinuria and check your tsh. Good luck.