When will I know if my back and sciatic leg pain are benefiting from Physical Therapy and help from my general doctor if I’m really worried about moving while in this much pain.

Hopefully, you will feel better with PT and medical interventions for your sciatica in the first few weeks of PT after the onset of your pain. There is good evidence to support that the higher the level of your fear of movement and pain initially, the better the chance you will benefit from reducing your leg pain with treatment as far out as one year following your injury.