What Causes Numbness And Chronic Pain In The Body After A Lumbar Spine Injury?

I have had a severe lumbar spine injury of L2, L3, L4, L5, T1, T2. I have PTSD, chronic panic and anxiety attacks. This has been going on for three years soon here. I have never had so much weakness, numbness, chronic pain, very heavy legs, cramping, and when I try to lay down in bed or sit with pressure on the lower back I need to urinate immediately, I can get up up to 10 times a night. I am still on crutches and have such difficulty lifting my legs. I am now worried as now doctor can fully explain what is happening to me. My Neurogurseon does not believe the leg pain is associated with the back injury. I have had three MRI that showed nerve entrapment. I have no quality of life I am 58 years old and used to be very active, this is not possible what so ever now. I need answers please oh I do not have a bladder infection, but I am losing my sodium and cortisol in a 24 hour urine test and have increased my salt and sodium intake, maybe this is causing the high blood pressure as high as 210 over 125 with 102 heartbeats. I really need help. Thank you so much for your time and help. Suzanne