My husband had a nerve removed from his foot several years ago.
It healed, but then after two months got red and seemed infected. Which was weird because it was closed up and the scar already "set."
So the Drs gave him antibiotics, switching when a couple didn't seem to be working, then he took as prescribed and everything seemed fine. Two months later we were on vacation in Florida. His foot was completely healed. He was jogging again and everything.
Well one day he said his incision hurt. The next day it was red. The third day angry red tentacles were running up his leg. We went to the ER and they admitted him for ten days with three diff kinds of antibiotic. The cut open his foot and left it open, he had to submerge it three times a day in some sort of medicinal whirlpool. All I saw when looking at his foot was meat.
I was sure he'd lose his foot. But HE DIDN'T.
He recovered and is fine and runs marathons now.
I know you are worried. Infection is serious stuff...but the human body can fight it all on its own too....don't count him down and out just yet. He's young and healthy and that is a very good thing.
I'll keep you in my prayers.