Hi Ann,
From my experience, Metformin does have a detrimental affect on your health, I was nauseous and had a really bad tummy, Glycazide doesn't help with weight loss, I've just been put on Linagliptin, and upped my dose of Glycazide, just had a phone chat with my nurse, she offered me insulin, but I'm hoping low carb diet will help me lower my levels, mine at one point were 25.9, does make you feel blooming rough, hope you feel better soon, would be interested to know how you get on with insulin.
Regards Jeff