I have a rash in the middle of my back could that ba a sign of hiv , had unprotected sex about 3 weeks ago no other hiv symptom present Hi I m 30 years of age, had an a sexual encounter about 3wks ago. Here on the 3rd week I m noticing a possible rash in the middle of my back. No swollen lymph nodes , no flu like symptoms, no other symptoms that which are associated with early hiv infection. Could it be stress related.