I don't think they are supposed to hurt that much. My initial stick ouched, then pressure, and he used that type of equipment to watch every move he made. there were no mistakes and it did help. I had Katamine infussions also and again there really wasn't any pain like you are describing. I am sorry that happened to you. It sure makes you not want to try something else doens't it? I did wind up in surgery, as there was a point, nothing did work. It was the right decision for me, and I am alot better. I hope for the best for you. ginnie