I doubt that they hit the bone, since most people have enough muscle and other padding covering the bones in this area. It depends on what you mean by your "hip." I know that injections are frequently given in the butt, and when they are given there they have to be careful not to hit nerves, so there are guidelines about where to put it. When I was in the hospital they gave me some injections on the ouside part of my thigh. In theory, I can't think of any nerves that are near the surface in the hip area. Also, I would think that if they hit a nerve you would have pain radiating to wherever that nerve goes. If you are worried, you could call your doctor and ask what you should do about it.