One way to get infected with HBV is oral sex.

Depends if the person giving you oral sex had tiny cuts in his mouth. As for herpes if he had a cold sore the risk for you getting genital herpes is very likely. Go get screened for everything. And always wear a condom, if you don't know someone put a condom on before recieving oral sex. Even if you know them you don't know everybody that they have been with so you should be more careful.

can i get tested for heb b as early as a month after the incident?

Yes it is not like aids and needs a 3-6month wait before showing up. You can get tested now. I don't see why you are stressing about hep b when it is cureable. The two incureable diseases are Hiv and Hep C.

thanks. i do appreciate the feedback. i am going to get tested for everything.