Mystery 10/10 pain, getting hard to keep going

I will try to keep this as short as possible.
I’m a 23yr old female. In 2023 I began having symptoms suddenly and they progressed over time, the only diagnosis I have so far is POTS and a reversal of the natural curve of my cervical spine. I feel like there’s something more going on, I am in so much pain everyday I can’t do anything. My spine is the worst.. it’s my entire cervical and thoracic spine - I’ve had mris of any they were normal. It’s constant aching pain 10/10 over the counter pain meds do nothing. It’s also started to be accompanied by extreme pressure in the back of my neck / head and spine to the point where it makes me feel like I’m going to blackout because I’m not getting enough blood to my brain ( that’s what it feels like ). There’s a few other symptoms I have but they aren’t as relevant- my main concern is what is causing this amount of pain.. I had to quit my job I do nothing but lay in bed, if I try to go out and about it’s awful .. my quality of life is pretty much little to none at this point. I’ve tried trigger point shots - nothing .. I’m on gabapentin it does nothing .. I’m so tired and I’m in so much pain i don’t know what to do anymore but I can’t live like this and i desperately need help.