Forget the chiro, get an mri. Pay for it if you have to.

Exercises:
Hang from a pull-up bar. Bar needs to be high enough to hang loose, if that makes sense. Hang as long as you can, will decompress.
Lay on your back with legs up on couch or chair as described above.
Birddogs
Planks
Look up Stu McGill big 3.

You are too young to deal with this for an extended period. If exercises don’t fix it, find a neurosurgeon.