I had Sciatica for years but now I do some excercises that keep it well and truly out of my life.
They where recommended to me by my Osteopath...did yours give you any follow up excercises to do?.
At first it made it hurt more and I phoned him back I tears and he told me, yep you are freeing a trapped nerve, it's bruised and needs a little time to calm down, but within a week I was pain free. Posture had a lot do do with mine.......
The first excercise I do is this one..... lay flat on the floor , pull your knees up but keep your feet are flat on the floor, get them tucked up to your bum as close as possible, then while keeping your back on the floor, flop your knees to the right, hold it there for a few seconds, the repeat over to the other side.... this stretches your back....
then the next one is like walking up the wall, back on the floor and get put your feet flat on the wall, then push against the wall, like you are trying to walk up it.. this stretches your hamstrings, alot of people with sciatica have tight hamstrings.....But always get it checked out before you do anything, as I say this has helped me but you may want to speak to your Osteopath and confirm that this would be ok to do.....
hope it gets better soon, it is so painful and I feel for you babe xxx