I have this non itchy rash on my body and arms. They are like the same color of my skin and are raised like a very tiny bumps. Had oraquick test 3 weeks after sex and it was negative. Would I test positive if I had ars? I went to doctor today and she had no clue what it was. Said it was minor looking since I didn't have other symptoms. Is hub rash the only cause for non itch rash?