@turkay1-- My boyfriend had transplants and he didn't have much pain.
They give anesthesia during the procedure, so you won't feel any pain then. My boyfriend had some pain the day after the procedure but he had pain relievers so it wasn't that bad. The pain was gone completely in a few days.
I think if you work with a good doctor, you won't have any problems. Hair transplant is the best way to get a new hairline. It takes a while for the new hair to grow but at least it's permanent and no one will know that you had it done.