Should i take pep? had sex with someone who was hiv + but undetectable. had protected anal sex, but i bled a little so we stopped (condom did not break). i gave unprotected oral and only tasted pre-seminal fluid. no semen got into anywhere of body?

HIV is not transmitted sexually when treatment has reduced viral load to undetectable levels, and the anal sex was protected and oral is very low risk, even with high viral load. PEP probably isn't needed, but this may depend in part on the reliability of the information about the treated person's viral load. Best to check with a local expert, and maybe your partner being retested.