About 4 months ago I fell over on a tile floor straight onto my knee cap
. After about a week of mild pain the pain went away. In the last few weeks I have been noticing more slight pain in the knee, as well as some perceived weakness in the knee. I've also found a slight bump across the patellar tendon, and overall the knee does not seem to feel right. Should I be seeing a doctor, or could this possibly be something I can treat at home? Any ideas on what it could be? Thank you.