Lower back and leg pain

Patient: I have lower back pain in the centre of my back which is radiating out to my left leg down the outside of my hip as well as the back of my thigh and bum. I have been given 600mg ibuprofen tablets to take but these are not taking the pain away, and I was wondering if I should go back to my doctor for further assessment

Symptoms: Lower back pain, pain down left leg in hip and back of thigh, possible sciatica?