This is what I did. I bought this:
http://www.ebay.com/itm/Cando-Black-...item2a559b50b7
And then laid on it and watched TV on bed when at home for about a week.
I got the shortest half roller available and paid about 10 dollars for it, shipped.
The goal was to push my herniated discs on my spine in the opposite direction, thereby pushing the nerves back in, which is what laying on the thing accomplishes.
It's not comfortable or painful, so you kind of move it up and down your spine as you lay and watch TV or you flip it around to the flat side to get a different intensity. But it works. You're straightening out your back and improving your posture too.
They say that if you took xray pics of any one group of people, say, those on a bus, the majority of them would have herniated discs to varying degrees. It's when the nerves start to push out that people start feeling back pain.