Sarkekodimag is right. They're not gonna be able to tell what it is until they run all the tests. If its a virus and they did a wound culture, that is not enough. I dunno how much it costs to go to ER but they will have all the supplies needed to run the tests. For Herpes Simplex and Varicella Zoster, usually, it takes about 5 days
to get the results.I hope you have health insurance coz its not gonna be cheap.