Called in at the hospital for the appointment at 1830 and was told that the doctor was in a surgery and would be late for about half an hour. As the hospital is nearby, I went home informing the hospital staff to call me when the doc is available to consult. They did call sharp at 1900 to inform that they would not know how long the doc might take in the surgery. That is understandable. Appointment re-scheduled to Saturday. In hindsight, it gives me also to decide should I really have to see a doctor, because I don't think it is serious.