Hi, Though a Fellatio is a low risk affair, the recipient is riskier as the semen may remain in mouth and you never know if there are ulcers in mouth or some oral problem leading to disruption of oral mucosa., from where HIV can gain entry .A mild burn at the tip of your male organ may be due to some abrasion cauded by the teeth of sex worker. Try to acquire knowledge about HIV how it spreads , how it does not , as after all knowledge is power! Dr Matin .A. Khan MBBS, MPH, MMSc (HIV Med) PhD M.A (Sociology) , M.Sc(Psychology), M.Sc(Counselling & Psychotherapy) Fellowship in HIV Medicine (School of Tropical Medicine Kolkata, India) AAHIVS ( American Academy of HIV Medicine USA) Galen Exam for Certificate of Clinical Competence in HIV Medicine from IAPAC USA MGM Medical College , Jamshedpur , India