Hi! It sounds like you are doing great on the glucophage. I know that the first 3 months I was on it I lost 34lbs.
I had some stomach upset and gas the first week and a half I was on it and then my body adjusted and I was fine. I guess the GI side effects are different on everyone.
I think you aren't supposed to take it before, during, or directly after surgery because it interacts with certain dyes used in different x-ray procedures, or when they take pictures of your intestines etc... I am not sure of the names. I just know that in my diabetes class it said to control blood sugar through a different medicine if you are planning certain procedures.
I hope that the glucophage and just watching your carb intake helps you to avoid type II diabetes for as long as you can. I am glad you have a very proactive doctor who is taking steps now with the IR; instead of waiting until you are type II. Good luck and best wishes,
Diana