bilateral sciatica symptoms but perfect mri?

I’ve been having sciatica type symptoms back pain shocks zaps in my back and legs for the past 3 months after carrying a hefty package up a couple flights of stairs been in pt treating it like a disc bulge but my mri results came back perfect

Clinical indication: Lower back pain after injury.
Technique: Sagittal T1, sagittal T2, sagittal
STIR, axial T1, and axial T2 weighted MR sequences of the
lumbar spine were acquired. Intravenous contrast was not administered.
Comparison: None.
Findings:
Vertebral bodies: No compression fracture.
No osseus expansion.
Alignment: Mild straightening of the lumbar lordosis. No significant scoliosis.No spondylolisthesis.
Bone marrow signal: Unremarkable for age.
Intervertebral discs/endplates: Preserved height and signal.Endplates are intact.
Spinal canal contents: Conus terminates at L1 and is normal in signal. No epidural mass or fluid collection.
Individual evaluation of the disc spaces demonstrates the following:
L1-2: Unremarkable.
L2-3: Unremarkable.
L3-4: Unremarkable.
L4-5: Unremarkable.
L5-S1: Unremarkable.
Paraspinal soft tissues: Unremarkable