when do you take your Metformin? Do you eat within 30 min. of taking it? You could be waiting to long to eat. Try testing when you feel bad to see if sugars are still high or to low. Drink plenty of water and walking helps bring sugars down. If keep happening you should call an advice nurse. This is what they are there for. Do you have any allergies to drugs? Could be an allergic reaction to the drug. I would not wait to long to let your provider know if it goes on much longer. Also, it might be a good thing to to establish the highest or lowest number your blood sugar should be with your provider that when you should call in. Have you took any diabetic 3rd classes? I have to open them twice and learned so very much!! Your insurance should cover classes. Then you will have a sylobus reference book you can refer too. I hope I have helped you out some. I live in Gresham, Oregon. Take care, and you might be able to find monthly support groups in your area. It helps to see a diabetic counselor to be able to ask questions and develop goals and resources. My insurance pays for mine. Let me know if this was some help to you. You also might check into your local Costco. Costco. Do some research.