I was going to say that those are symptoms of hyperthyroid. Talk to an endocrinologist to have your levels checked.
A chest film is a must for all diabetics once an year to rule out tubercular infection.
37 y.o. weight loss, could a lot of causes. Check thyroid, check for cancers: blood work, breast, colon- unusual but sometimes happens. Anxiety, stress, GI problems-diarrhea. You should probably talk to a doctor and to be asked many of these questions.
You should ask your doctor to check your bloods for any thyroid problems. I was tired all the time and lost weight and it was due to an underactive thyroid.
Hope this helps.