I developed some nasty hip pain last year which affected me only when I lay down to sleep, and so badly that I was sitting up for most of the night. I don't do doctors or pills so I tried a chiropractor. She told me much the same as you were told, misalignment, head stuck on wrongly etc but she also arranged an MRI as well as giving me advice on exercise and sleeping posture. When the MRI showed inflammation she recommended anti-inflammatories from a GP, as well as 8 weeks chiropractic treatment. One thing she couldn't explain was why I had pain only when I lay down. I took the 8 weeks treatment which did seem to ease the pain a little but anti-inflammatories be damned. I applied DMSO nightly and after about 6 months the pain was gone.
I think if you have little confidence in the clinician, you're less likely to get benefit from the treatment. As you know, belief in the treatment is half the cure.