Hi , I was in Vietnam for few days and met a woman , not a prostetute , seems a normal girl ,we had no sex , but kissed each other in a french kiss style. It lasted about an hour. But she bited me on my lips ver lightly several times. It was deep kissing and i think her body liquids transported through my mouth. I m not sure if she has HIv or hepatitis B , but how can I protect my self in case of any defect occuring? What is the first thing to do to prevent hepatitus B? Thank you.