It is vey possible you are having a reaction. Have you also changed your diet? If you have insulin resistance, loosing even 10lbs will help. If you dont exercise, walking briskly for 20 minutes will help. Staying away from anything in a box or made with flour is even better. Go back to a natural type diet. Think caveman. If you cant hunt it, fish it, raise it or grow it, you are better off skipping it. Insulin resistance is caused by the hormones in fat to interfere with your bodies production and use of insulin. A little bit of exercise and a change in diet will push off you getting diabetes. Act now to prevent or at least stall this disease.