I'm sorry that you are having so much trouble getting the kind of care that you want, need and deserve. I wouldn't get too bent out of shape over your posted MRI results; none of it sounds terrifying. Annular tears are common, so is reversal of curve (lordosis) and please remember that many people show degeneration of the spine; it's those of us w/symptoms that are disconcerting. It sounds like you don't have faith in your chiro and your GP. If it were me--I would stop the chiropractic care until you find someone that you have more faith in or develop that in the one you are seeing. I would skip trying to find a GP who understands these specific conditions and spend my time trying to find a treating doctor who can manage your case for you and send you for appropriate tests and to appropriate doctors. If you can't find just one then I would go for a few different doctors who can manage different aspects of your case and conditions. Myabe a neurologist, thoracic surgeon, physiatrist, pain specialist, spine doc... basically someone/s who understands a lot and is willing and able to research things for you if necessary. Have you looked for doctors in the stickies above? Have you contacted your health insurance company (not WC) to see if they can help find a few names in your area? Good luck with it and keep us posted.

p.s. are you hypermobile? If so have you checked out the thread on hypermobility?
p.p.s. I know that it can be very overwhelming to be in your position. this may be a good time to take control and find just ONE practice you can do yourself for yourself to go along with all the time you are spending researching docs and educating yourself about your conditions. Like a small walking program, breathwork, or some meditation or time in a warm pool.
Sharon Butler's selfcare pgm or Edgelow's self care prgms are good choices too.