You already have herpes - everyone does. Regarding BBBJ, it is quite safe, but if you are worried, put on a condom. Simple. Condome = safe. Yes, hookers might give you an STD that they received from another guy that received it from another girl that received it from another guy that received it from another girl etc. That is the reality of the hobby. We all share each other's sexy appts.
Remember, your next short relationship that lasts for 3 weeks with a girl you meet at the bar is the one that you have to watch out for. She will ask you to do BB and that is when you will get your STI. For most civie girls have 2 guys going at the same time when they are in the mood for a relationship. They just pretend like they are 'good-girls' who 'don't do that sort of thing'. Unlikely to get STI from covered FS with a sex-worker.