I'm fourteen years old and my knees really hurt when I bend them. It's been happening for a couple of weeks now.

Say if I bent my legs so I could touch my hands on floor when I try getting back up its really painful, it feels like my legs about to snap or when I wake up in the morning, my legs are like locked? And it feels like if I do it too quick I'll break a bone.

It's really scaring me, I don't know what to do? I'm going to the docters tomorrow, maybe I should ask for something?

Please help. Thank you :)

Have it checked by a doctor. It can be arthritis. I have arthritis but am having therapy sessions. Also, for the pain, you can ask your doctor about tramadol (http://www.tramadol.tc/). Very helpful during the bad days. Hope this helps.