Here's a breakdown of your MRI:
"The L4/L5 disk space level demonstrates a central bulging disk with annual tear in the left paracentral location but without focal herniated disk protrusion. There is mild spinal stenosis. The neural foramina appear normal."
The disc is bulging and torn, but does not protrude (say, on your spinal cord). Stenosis is impingement of the spinal cord or the nerves that branch from the spinal cord. However, since you identified sciatic pain, there's a possibility you have stenosis on the round canal (where the spinal cord resides), on the transverse process (the angled protrusions of a vertebrae), or both.
"The L5/S1 disk space level demonstrates desiccation of the disk with Modic type 2 signal changes prominent on both sides of the interspace. Central bulging disk indents the thecal sac in the midline. There is no spinal stenosis. There are small bilateral foraminal herniated disks."
The vertebrae shows previous and recent damage (Modic Type 2 of 3 stages), and the disc is drying (desiccation), which is a loss of fluid and may cause degeneration. The disc is also impinging the spinal cord protector (thecal sac) and is bulging/herniating.
It's no wonder you're in such pain! Having gone through much of this, I know where you're coming from. But I was a bit lucky (if you can say that) only because I was affected by stenosis 2 years AFTER I'd had the surgery for my torn disc...you're dealing with my 9 years of issues all at once!
I also think you should seriously consider surgery, as you've tried everything else & much of this can only be fixed with surgery. I know, as I had an IDeT for my torn disc and a laminectomy for my stenosis. I still have other problems, but i can walk without a cane or crawling!
I recommend an Orthopedic Surgeon, who focuses solely on the spine, or a Neurological Surgeon, since they understand the spine better than anyone else in the business. Sports injuries would be a plus, since your injuries mimic those type of problems.
My Ortho focuses only on the spine, works with many of the NFL players in town, and has at least 2 Neuros who work with him. Don't settle for less...it's your health!
Good luck and keep us posted.