I've had the BA reaction and I think its hard to tell if thats what it is or infection - I would agree with big Phil - go to a doc! Its not worth the downside if it is an infection. And antibiotics will probably take care of it if it pretty easily if it is. If you're worried about what to tell the doc, insurance issues, etc. and if you can spare a few bucks just go to a "doc in the box" and give them a phony name and pay them in cash. Exam and some antibiotics won't break the bank, and unless you use insurance or write a check docs don't require ID. At least not here in Atlanta. That way it won't affect your ins. BTW - just the BA stuff can swell up, get red, hot, and hurt like a mofo - I just got over some from some crude susp - but like Phil says it could just as easily be an infection which could really fuck you up if it is, and is also easy to take care of if it is - so go to doc.