Been punting a few years and have never had any stds. Lucky or good selections, not sure. my rule for punting is pick wisely. No bareback girls is obvious. For me a lot of EE girls as could of been trafficked so high risk. Couples with bi guys as gay people are high risk. Escorts that swing are higher risk. I also stay away from gangbang girls, girls that like MMF as tend to be more of a slag prossies.
Any girl is a potential std hive. Condoms can break, unprotected sex with punters you don't know about her partner. Plus all the Cocks and spunk they've taken in mouth, even if tested 24 hrs previous, guy before you could of been bi swinger high risk or who knows.
I've been lucky, good luck to you.