September 15th I was sexually involved with a friend (With protection) But I might have a blister on the inside of my lower lip while performing oral sex. 1-2 weeks later I developed cold,cough & head ache. That was treated with normal OTC medication. I then decided to get tested for
HIV(AB duo) VDRL HEP B and C. My first test was on 3rd October, 2nd on 3rd December and recent one on 26th December. All were negative. But I am still worried that I might have contracted HIV disease.
My questions are
Were the cough, cold and headache simply coincidental ?
Is it possible to contract HIV if I had an ulcer while oral sex ?
How accurate is the AB duo test and should I trust my negative result as conclusive ?