I had sex for the first time with a massage girl using condom, she used one condom for bj and later used second condom on first one so I had sex using two condoms at same time for less than a minute. She said she is safe and then i started to fully penetrate her. My doubt is what are the chances of HIV/STD, as STD can transmit from infected person to uninfected person through mucous membrane. If the uninfected person has no cuts or open lesions and used condom can he get STD?

(picture of scrotum with blisters)