Infection? Or just rash/allergic reaction? Shave biopsy 2 weeks ago and it looks worse than ever. (Photo)

I fear the rash more than the wound! It's purple, raised, itchy, & seems to get worse daily... I'm also concerned by the fact that the wound hasn't closed at all. It's actually slightly larger now. Initially, the bandaids seemed to cause itchy bumps, so I switched to Tegaderm which felt amazing!, but fluid kept accumulating. Today I stopped using the Polysporin from the doc & bought some Vasoline. Still worried. Upside? It's benign :)