Have Impetigo, Red Itchy Rash On Arms, Hands, Chest, Incredible Stress, Prescribed Keflex. Cure?

Hi...thank you. Well, I think I have impetigo ... 2 friend dr s ...one a podiatrist and one a plastic surgeon...both dear friends...told me that s what they think it is....but that they are not dermatologist I went to the zoo on a very hot august day and many children were there. I was leaning up on rails and fences a lot to see the great animals. Upon leaving I had a very bad red itchy rash on my arms (mostly wrists) hands and really bad on chest Well, After a month, I cleared up. I also had a chest cold with it all. My foot dr friend prescribed Keflex and Bactroband (not sure of spelling) and it cleared it up. The last week I have been under incredible stress and I have a a bad sore on the left side of my nose, nostrils, and around my mouth...and the skin is very red, like raw...and oozing stuff.. So he prescribed me a refill of the Keflex and ointment. but the ointment is making it burn really bad. it looks like my face was in a fire and I got burned. its very painful. I have no health insurance and do not know what to do. :-( My email address is :