There are multiple possibilities for the symptoms that you're facing. There's a possibility of a prolapsed disc or
Vitamin B12 deficiency, etc. I would advise you to meet an orthopedist so that you can be examined and undergo the necessary investigations such as MRI(if indicated),
thyroid profile, vitamin b12,
vitamin d, etc to find the underlying cause and have it treated accordingly.
Next Steps
Follow the steps as advised
Health Tips
If condition persists or worsens visit the ER at the earliest