Hi, I am a 68 year old female, retired since December 2016. I have been taking Metformin for Type II Diabetes for Approx. 10 years, doctor prescribed. Two pill am and two pills pm. Over a period of 6 months, I have lost 55 pounds, aches and pains in joints, feeling tired, loss of balance, pain in right groin and lower back. Could it be the metformin A1C 7.1 to 7.5.