Did I get Genital Herpes after a Thai Massage? Very concerned..

Hi,
I recently went to a Thai Massage. I was naked because the lady took my boxers off and the massage lasted 90 minutes, mostly I was laying on my stomach. There was absolutely no sexual contact, but later I found out that this massage place offers happy endings, which I was not aware of.. 3 days later i developed a single bump in the genital region below the waist line. I am very worried that the towels that I was laying on may have been used/dirty and not changed/cleaned and thus contracted genital herpes or something else??? I went to my doctor after 2 weeks having this bump, she said it is “definitely not genital herpes” and I also went to a dermatologist for a second opinion, who also said it does not appear to be herpes. However, they couldnt tell me exactly what it was and each gave me a different cream. Tomorrow will be 3 weeks, and it is flattening out but still red and some pus visible. No fever, no other symptoms. It does itch. I do have oral herpes on the mouth since I was a child, but have not had an outbreak in around 5 years. Could anyone please help? Is it maybe a boil? Has anyone experienced similar?

this is not herpes