I have a shingles appearing rash on my neck, not sure if it is shingles or not, my daughter gave me a necklas that turned my neck green also, and I started new medication too, gabupention.... the rash is red and has little white bumps on it, if it is shingles will it spread? how can I treat it at home? and I also I have clindamycin, can I use it on the rash?