Great news! A herpes outbreak will only occur in the specific area it was transmitted to. If you have oral herpes, it will not randomly appear on your genitals, and vice versa. However, be careful not to touch your genitals directly after you have touched a cold sore on your mouth; it is possible to accidentally transmit the virus in this way (although it is rare). And remember—you are still at risk for genital herpes from a partner’s mouth or genitals. Continue to use condoms 100% and discuss STI prevention openly with your partner.
Thanks for asking this great question!