Hey Grana
I'm 16, and have just started a course of Methatrexate. I have juvenile idiopathic arth in my neck jaw knees elbows hipa and shoulders. My doctor says it could be for a minimum of 3 years, i started 2 weeks ago. I was really worried about it because i heard lots about side effects, but apparently they only affect 1 in 10. So far ive had nothing (luckily). I think the worst it gets is mouth ulcers and hair thinning.
I was on naproxyn before that, and before that it was dicloflex or something :s i also do lots of hydrotherapy- maybe try exercising/ stretching in the bath? it always hurts me less.
So far, methatrexate has been good. It takes ages to work, my doc said, and ive been told to have a folic acid suppliment. every 2 weeks they are upping the dose a bit until it builds up enough. I think 15mg is going to be my max.
I hope it all goes well for you, remember that its not only you that suffers!!