Knee problems? Aches and pains?
i had this pain like a month ago for a week but not as bad and then it was gone and now it's back. so if i have my knee bended when im sitting or laying down, even for a short amount of time. it's my right knee that hurts and my left one is perfectly fine when I unbend them or stand up. if i have it bent and then i try to unbend it I just get this tense and sharp pain and it's so painful I could fall down easily. usually i have to steady myself my grabbing hold of something so i could stand up. but after a minute or so the pain is gone. it's been going on for a week or so. i'm only 13 and i dont run or anything, i'm pretty lazy i have to admit. my dad said it's from gym, but i highly doubt it. Help Please?!?!