Hi Im Abbie I'm Very Young And I Have Very

hi im Abbie i'm very young and i have very bad aches in my knees it started two years ago in primary school but at first it wasn't ache it was more your typical moving pain but its gotten so bad i can no longer walk up and down stairs normally and it hurts to walk but now it doesn't hurt as much to do the activity but i end up in LOTS of pain after i have done it i this ache is starting to effect my hips also, i have symptoms of arthritis in my hands and fingers ect but I've been tested for arthritis and it came back negative witch doesn't explain why my knees and hands ect get affected by the weather just like arthritis