Hi Sheilag,
Welcome to MedHelp's Pain Management Forum.
It does sound like you have a localized infection...or the beginning of a cellulitis. If you haven't been to Urgent Care or ER you need to do so now. You want to avoid a system wide blood infection, sepsis.
Please let us know how you are doing.
Best of Luck,
~Tuck
Unfortunaely, more likely and common than you would (or would even like to) think. I had one get infected several years ago and ended up with a nasty case of cellulitis that ended me up int he hospital for 7 days and I nearly not only lost my hand/arm, but also my life.
Please get this checked out immediately.