Don't know if this will help, but I suffered sciatica for years until a nurse friend of mine started doing reflexology, she suggested I give it a go and it cured it! Took two treatments a year apart as it returned after about a year and I've not had a twinge since, quite a few years ago now. If you can find a reputable reflexologist try it and see, meantime you know the little hollow above the heel on the inside of the ankle where that little bone sort of sticks out, massage that area gently and see if it helps to ease the discomfort.