"Mis-diagnosed infection"

When an area the size of a large watch face swelled on my forehead near the point I had scratched it four days earlier, I took myself to ICH walk-in clinic. Despite being told they were busy and there would be a wait, I was actually seen quite quickly by a nurse who said she had started her shift early to help with the workload. She examined my head thoroughly and declared that it was definitely Nnot infected but was a result of the scratch and would go down soon. In her defence, she did say that if it didn't I should take myself to Derby Royal and have a doctor look at it. When my whole head had swelled up by Sat night, I did just that on Sunday. Even the receptionist there took one look and said "Oo, cellulitis." This is a skin infection and, whilst not normally seen on the head, seemed very clear to her. I spent the day there with two bottles of antibiotic dripping into me, before leaving at 10pm with a double strength course of antibiotics. On the Friday (Good Friday admittedly) and with my vital signs still strong, no sickness and no sponginess to the infected area, I'm sure the nurse felt she had made the right decision. But she didn't know for sure what it actually was. I feel she should have tried to get a second opinion, or at least admitted she wasn't sure and sent me straight to Derby Royal.