All of your symtoms could point to a range of illnesses and problems, if you ask your doctor to refer you to a specilist (Spinal Clinic). If you wanted to go private (quicker, and not REALLY expensive) id go see a Reflexologist and a Chiropractor.
The spinal pain could be the swelling of joints beneath the spinal and pelvic area, equally it could be a trapped nerve.
Suffered with a bad back and some of the similar symtoms mentioned above for coming 7 years now (17 years old now)... no idea what age you are, but you need to go private to be taken seriously if you are of a younger age. The reason i was never treated rightly was becuase of there suspisions of 'Attention Seeking'.
Hope this helps, ask for your referal.
Sole