I am 64 yrs old and by the online pics I saw, I believe I have early impetigo, one spot on my left forearm. it is about the roundness of a choc chip, red, a bit raised. Also has a mild itch to it. These are the products I have at home, and will any of them work/or what can I get over the counter? Miconazole nitrate 2% Bacitracin Bacitracin/Neomycin/Polymyxin-B Thank you