Hi, I'm a 19 year old girl and I've had a lump on my knee for at least a year now, I can't remember exactly when I noticed it. I've just become really concerned about it in the past week and I've noticed it feels quite sensitive and tingly but I don't know if that's just placebo because I'm so anxious or because I've been touching it so much as I've been so anxious. I'm sending myself over the edge panicking about it and I couldn't get in for a doctors appointment for them to have a look at it until the 12th of July. Any reassurance or just anything would be helpful please