Had it and it is not nice. Not saying I have a perfect back now, but I tried everything, chiropractors, hospital, heat pads, this and that cream,etc.. The best thing I found for it was a set of stretching exercises - gentle at first - carried out everyday ideally on the floor if you can get down. Took a number of weeks of these exercises but in the end the sciatica went, though the back problem that caused it is still there. What is not good for you is doing nothing in exercise/stretching terms. You can 'build' your own stretching routine using some of the exercises/stretches shown on You Tube. I keep up the stretching now a couple of mornings a week, combined with Boxerdogs fitness classes.
Out of the 'practitioners' including a course of hospital treatment was a sports physio, the others did little to get rid of the problem, at best helping with some pain relief. But if you find something that works for you, you don't care who or what it is.