Did you see an orthopedist? Did you get an MRI, which shows soft tissue and X-ray doesn't? I'm no expert, so don't know what patella tracking is, but is it possible they were talking about the patella tendon rather than the kneecap? That would hurt on the sides and below the knee. But if there's a lump that wasn't there before (you may be referring to a part of the knee that looks and feels like a lump but is just part of the side of the knees. Pain from pressing here can be from a Baker's cyst, patella tendonitis, or a problem with your meniscus. If it's so bad you can't exercise, it needs a better doctor to look at it.