Herniated disc and such. 23 years old very nervous.

Hello everyone I've been a lurker for a while now. I've had on and off back pain for about ten years, when I was 14 I fractured a lumbar vertebrae, and was also diagnosed with spina bifida occulta, which they believe will never be of large clinical signifigance, i.e. I am very lucky in that regard. As per recent studies, the fracture is healed. I try to fix my posture but it's still kind of bad so I guess thats why I've been prone to back pain for all these years, perhaps muscle imbalances who knows.
My job is Emergency Medical Technician. That means repeated heavy lifting. I am also very active, or at least I was. I either hut my back lifting or working, I'm not sure. My diagnosis as per and mri are as follows:

The vertebral bodies are normally aligned. The vertebral body heights are preserved. A schmorl's node is seen within the left inferior lateral L1 endplate. There is associated hypointense T1 and marked hyperintense t2 signal without surrounding edema. There is loss of height at the l1 l2 and l5s1 disc space levels with loss of signal of the disc at these levels. The conus medullaris is normal in signal and terminated at l2.

l1 l2: There is a mild bulge without canal stenosis or foraminal narrowing.

l4 l5: there is flattening of the dorsal aspect of the disc withuout canal stenosis or foraminal norrowing.

l5 s1: There is a central disc extrusion with disc material migrating inferiorly without canal stenosis. There is not significant foraminal narrowing.

CONCLUSION: l5 s1 disc herniation and l1 l2 mild disc bulge. There is no canal stenosis or formainal narrowing to result in nerve root compromise.

It hurts when I run and sit the most. I get a weird feeling down my left leg, usually no pain. My left calf gets cold sometimes. Always back ache at the least. It usually doesn't go into the right, but sometimes it does.

I'm still waiting to see a specialist. SHould I continues to work and what are the risks of working? I know noones a doctors that is more of a what would you do kind of question. Is loss of signal degenerative disc disease? If so, can they rehydrate? Also, can a disc herniation heal? I want to be one hundred percent again I haven't even come close to meeting all my goals in life, so I'm very nervous. I am only 23 years old and have already overcame cancer as a teenager. I constantly have had health issues since, including hepatitis c and a blood clot in my heart. I want to stay in and progress in the medical field and help people. Thats what I was meant to do. I ordered an inversion table but didn't receive all the parts so I'm waiting on them, I heard they can help. Considering an epidural too. Thank you so much all of you.