Due to ongoing problems with severe back pain and headaches, I have finally plucked up the courage to make an appointment with a chiropractor. I'm terrified as I had a really bad experience with an osteopath years ago. I have been seeing a McTimoney chiropractor, but haven't seen any improvement. That is a really gentle treatment, but I suspect this won't be quite so pleasant! Are the movements sudden and violent, does it hurt when they 'crack' you? TIA