Just recently I have been having pain in my left knee that is so severe that I have to brace myself on something when I am sitting down. I have also developed a painful lump on the top of my knee cap that is about dime sized, is definitely part of the bone, not soft tissue, and is tender to the touch.
It started just hurting on and off, often waking me up at night. Now it is like a tooth ache, and hurts the majority of the time. I am 25 years old, I eat a healthy organic diet and exercise 6 to 7 days a week.
In comparison to my other knee it is a bit swollen over all. I've had no recent injury, and this is something that has slowly been becoming more and more bothersome.
I've googled and googled and have found nothing that matched what I am experiencing, short of a tumor. I'm hoping someone has some insight/experience with something similar.

Thanks you