Please can you help me?

Tonight I have been out for drinks with my team from the office. Our boss is very open about his sex life and he admits that he often schedules nights with sex workers / prostitutes. 

Out of politeness, we all said hello and engaged in standard etiquette of two kisses on the cheek and a handshake. However, I mis-timed my movements and accidentally ended up kissing the prostitute on the lips (not open-mouth).

I went to the bathroom to wipe my lip with water and a towel.

My worry is that I can’t remember if I licked my lip before heading to the bathroom. As of yesterday, I had an abscess drained and it is still tender in my mouth.

From reading the forum, HIV is only transmitted by unprotected penetrative sex, shared needles; and massive blood exposure (e.g. a stabbing victim).

Am I worrying for nothing?

Thank you