Hi Debbie and welcome. I'm sure the T1s will have some tips for you to get on track with your diet, insulin and weight loss plans. Plantar fasciitis is treatable with orthotic foot supports and stretching exercises both prescribed by a podiatrist. Amitriptyline can cause weight gain in the doses used to treat depression ie 100-150mg but at 10mg it won't cause too much of a problem in this area. It might help with nerve pain/chronic pain but so can other drugs in the same group, so if this one doesn't help, you might want to try one of the others. Good luck.