I am a 15 year old girl and I’ve had on and off pain in my left knee for years now. In general my left knee feel weaker than my right but a few times a month it will get quite painful, especial in the evenings and at night. It has gotten a bit worse in the last few months. Sometimes there is no pain at all and Nd I’m fine and the next day it comes back. I honestly don’t not know what is causing this. I haven’t had an injury, I’m not a very active oerson unfortunately. I’m scared of going to the GP cuz I’m scared they’re gonna mark it down as growing pains or something which I know it isn’t because when I got growing pains the pain was different and it was in both knees. Hopefully I’ll get to go to Tehran dkctir soon. I know it probably won’t be a tumor but I can’t  help but being a bit wary of it.