I have a bulls eye marking on my back.I felt a bit but when I looked in the mirror and had my husband check there was no bug. Than it appeared to be what looked like a ring worm but it hurt and was itching and I had a real bad headache like my brain was about to explode and my knees were hurting.So went to my doctor she treated it as ringworm. But 3 days in a red ring formed went back and they didn't know what it was. So they gave me antibiotics an a cream. until they ran a Lyme test an another they came back negative. So they stop the antibiotics after 7 days. They wanted me to see a skin doctor so I did. They told me they wanted to put me back on antibiotics for 3 weeks the same one's without even testing me to see if I was infected . I am totally confused. Can you give me some feedback please!