Sciatica? sharp pains in back of thigh, side of thigh sometimes in front, also in calf and bottom of foot, not all at the same time but different days

Have your Dr. refer: you to an osteopathic physiotherapist in the UK to evaluate this further. There are a few excellent schools/ clinics asssociated with the schools of osteopathy that provide excellent care, evaluation and treatment to see what the underlying problem is, and treat it. Sciatica is not a fun diagnosis, and one in which can be managed successfully.