Sometimes people experience what we call seroreversion. That means they go from positive to negative on an IgG test. People do not experience that with herpes western blot. If it is ever positive, it will stay positive forever. You may wish to consider getting a western blot just for clarity here. This is kind of an odd situation. I also want to consider going off of Valtrex and see if you have an outbreak and if you do have that swab tested to determine if it is actually HSV-2.
Remember if you are not on suppression that you are more likely to infect others with whom you have intercourse
Terri