I agree that you should seek medical advice since it's impossible to judge without seeing it whether it's infected or just friction. Please don't post any pictures or size measurements on the forum as it's against the rules.
Wannabe CPN : -)
"He who is tired of Weird Al is tired of life." - Homer Simpson "I hear those voices that will not be drowned" Sanity is a nasty disease. The world would be a happier place without it. - Rilic
RIP Kat 4th July 1987- 11th June 2013