Get to a Doc. Blood Posioning can kill you in 48 hours. The slime will get his in the end. I know, I almost died from a broken leg.
Yes! See a doctor or an emergency room. Put your health first.
Side note: I remember going down a narrow one-way street in the Cleveland area (and thanking my lucky stars that I was driving a big, hulking, '79 Sedan Deville). Before I could reach the other end, some fool turned in and was facing me and coming my way, probably thinking I'd move.
I didn't move; instead, I put on the brakes and stopped completely. I had the gigantic bumper of a late-seventies Cadillac. He had a Hyundai. What was he gonna do?
He slammed on his brakes in front of me. He leaned out the window and cursed and swore, telling me in profane terms to get out of "his" way. I turned up the radio. I knew I was going the right way. Heck, I could even see the "stop" sign at the end of the street and it was facing me. I could also see the backside of what I knew to be the "wrong way" sign that this other driver missed.
Took the guy about ten minutes to relent and back out. He probably never did figure out his mistake. But I sure as heck wasn't going to try getting a ticket for going the wrong way BACKWARDS on a one way street.
Sometimes people learn by reading signs, directions, and instructions.
Sometimes people learn from mistakes.
Then there are those annoying and dangerous blokes who refuse to learn. I have known a few and find that I don't get very attached to them.