Hello I'm Dave 41, I Was Hit On My Left

Hello I'm Dave 41, I was hit on my left leg 5 days ago during a fishing trip. The hit was on my cuatricep right above the knee, and during the first evening the area was super swollen. I treated it with Ice and cataflan during the next 2 days. The swollen disminish, but on the third day a redness around the knee start growing and went down to the knee. Last night I had to woke up with leg pain. Tonight I can hardly sleep because of the pain.