I had bad sciatica pain years ago but the thing that cured me instantly was drinking water. I read online that anything to do with disc pain is dehydration...a bell went off....I went straight to the water tap and never had it again. The reason I got it was I was on a colon cleanse that pulled too much water...didn't drink extra as they recommend. you should be drinking half your body weight in ounces or you are dehydrated like 75% of the population.
After two days of severe pain and bent over walking, I drank several glasses of water every hour stopped the pain and hasn't returned. When threat of hip and leg pain, increase water intake. Works great.