I have been sexually exclusive with my partner for the past 8 months. After having an all day sex fest, I developed a painful rash on my chin. I've had skin irritations before because he has facial hair, but never to this extreme. The skin is not only red but painful little blisters have formed. After scrubbing my chin, I noticed after the blisters have popped there is a clear liquid that oozes from the little blisters before they dry. What is this rash and how can I get it cleared up quickly to avoid further pain?