Can anyone help provide insight into my recurring back / sciatic pain & MRI Results?

[Lexi6886]

I originally had a bulging disk at L4-L5 at age 15. I completed PT, it bothered me for a bit again at 18, then was practically fine (with a little nagging here and there) for 10 years.

About 8 months ago the pain came back worse than ever. I got an MRI, I've been through two rounds of cortisone injections and physical therapy, which helped up until a month ago. I just started acupuncture, am seeing a chiropractor this week and will be starting up PT again. However, I think at this point it would be helpful for me to understand what exactly these MRI Results mean...

Impression:
At L4-L5 there is a bulging disc with a left paracentral disc protrusion and degenerative facet changes causing mild spinal canal stenosis with narrowing of the lateral recesses, worse on the left. Impingement of the traversing left L5 nerve root. Mild bilateral foramina stenosis is also noted.
2. At L5-S1 there is a small right foramina extra foramina disc protrusion with degenerative facet changes causing mild narrowing of the right lateral recess and mild right foramina stenosis.

I was told that the bulging disc at L4-L5 is what's causing my sciatic pain (through my glutes and down to my calf) but there seems to be a lot more going on - and I'd like to be able to better understand these MRI results so that I can take the appropriate routes to care.

Any help is greatly appreciated.

Thank you!