If I have a one week breakout of herpes are the chances that it's hsv 1 on the genitals?

Some chance. Most herpes in this area is type 2. Sometimes type 1 is transmitted by oral contact. Most people already have type 1 but do not experience any symptoms. If you already have type 1, then a new infection must be type 2. You should have been given an oral therapy at the start 1 week ago. You can be tested to determine if you have hsv1 or 2 or both. You should see a Dr for expert advise about herpes a.