I don't have MS but have a condition that is fairly similar and I have taken Lyrica before for pain.

It didn't help for me at all and one of the main side effects I had was weight gain - I put about 30lb on during the 3 months I was on it which isn't good for anyone, let alone a then 12 year old!! Lots of the people I have spoken to that have been on Lyrica have also reported weight gain.

The other side-effect I had was feeling really fatigued - I couldn't get up at all and it was a LOT of effort to try and do the simpliest of tasks!! Eventually, my Pain Management Doctor decided that it wasn't work the side-effects so decided to take me off it!

Everyone is different though and I wish you the best of luck and really hope it helps you ... please keep us updated when you can!