Welcome to the CP forum! You have come to the right place for support, and I'm sure your will enjoy it here. The members are simply wonderful, and of course we all suffer from some sort of chronic pain.
As I read through your history of injuries and health issues, I'm thinking OH MY....this poor girl!
One med that you mentioned, that I have not seen in 30yrs is Fironol. I had that when they cut out my Wisdom teeth, and it is known to induce amnesia at times. It did for me anyway!
I'm not sure who is telling you that your pain is in your head, but I would certianlly shove the MRI report in their face and tell them to read it for themselves.
An Epidural can help some Patients but not everyone, but I would take the opportunity to have it done. I have had success with them in my neck, but then again, it did nothing for my lower back.
The members here know full well what chronic pain is like and can relate with your feelings on this. I have at times call Chronic Pain the Termite Disease, in that while the exterior of the house may look fine, underneath those little critters are wrecking havoc with the structure.
Again!...I want to welcome you, and please to keep posting here on the forum. We learn from your experiences as well as you do from us. It is all a learning and sharing process.