I was diagnosed as a child as well and I know what you are going through. You need to find things you can do so you don't sit around feeling left out. A great thing for me was swimming. It is low impact and great for your joints. I am sure your doctor will agree. It is a good way to get your joints moving without a lot of pain and you will meet alot of people in the process. I also went horse back riding and things like that. Anything that did not put strain on my joints and cause me to sit around thinking about the pain. That is important, trust me. It will help you. I know someone mentioned a support group, I wish I had done that too. Lastly, make sure your parents monitor the medications you are put on as they are mostly made for adults and can really wreak havok on children so get a really good doctor that works with people your age. I wish you the best.