Knee pain gets worse

Patient: I am a 17 year old girl. For the last week I’ve been having pain on my knee and more specifically on the inside or medial part.It’s getting worse day by day and it hurts when I walk for a while. Furthermore when it doesn’t hurt it bothers me like there is something in there.Thank you

Symptoms: Hurts when I move it and stretch it. Always cracks

Doctor: