@ choela when u visit a doctor it doesn't mean they will give u medicine at once.... they will test ur everything like thyroid, gastric, blood pressure, height and weight imbalance. for me i was in a very good shape. all test were negative and so doctor had no choice but give me a medicine. coz doctor they at first refrain from giving the medicine. he also knows that if it can be treated the other way or think if i have any other disease but if not they will only  prescribe u a medicine.