Open sores anywhere in the genital area concern me, of course, for herpes as a possibility. are you sure you didn’t scratch open sores due to the itching? My recommendation would be to get an IgG test for HSV 2. Have your partners been tested for HSV 2, do you know?
Not sure if the Valtrex made a difference or other things, but I see why you would be concerned. If you can find out the HSV 2 antibody status of your partner(s), that would be very useful. If all are negative, then you likely don’t need to worry.