From history it seems to a postero-lateral disc protution. No mateer where it is. There is no single reliable test which conferms it.

So, u can persorm simple stretch (Rotation) manipulation for the lumbar region at side lying position maintaining painful side above. (According to Cyriax System of Orthopaedic Medicine)

Osman Gony
BPT; PG. Dip. Orthopaedic Medicine.