About 2 days ago in morning noticed some discomfort back side of left leg right behind the knee in the crease. There is now deep redness with a slight white area near center right over the hamstring, there is some low level pain and it hurts a little to straiten leg out completely, my temperature is going from 99.5 to 101.5 back and forth, I suspect some kind of insect bite, maybe spider, but not sure. My doctor is unavailable and hospital E.R. Is on full divert, what do I do next?