Hello, On Wednesday The 23rd I Fell Directly On My

Hello, On Wednesday the 23rd I fell directly on my butt while roller skating. Over the next few days I had some minor pain nothing unexpected after a fall, this is including completing a 600 mile road trip. On about Tuesday the the 29th the pain near the mid-line of my butt-ox started getting worse. By Thursday the 31st the pain reached a 8/10 and I noticed a small lump about 1/2 inch on the left side in-between the anus and the vaginal openings. Today the pain is still at least 8/10 and the swelling has increased to about an 1 1/2 inches. There has been no noticeable bleeding in my stool or urine. I'm trying to figure out if this is something that should see a Doctor for or continue home care.