Thank you for the additional information.
It certainly is possible that you could have developed HSV1 n the genital region. Most people get infected with HSV1 as a child or young adult, but for those that have not yet been infected, it is possible to become infected. In those people that are not yet immune to HSV1, they can become infected in the genital region if so exposed, although it still will cause oral infections more often.
Therefore, yes, if you are having symptoms that are substantially different than the previous symptoms caused by HSV2, the primary concern would be that you have become infected with HSV1. It cannot be definitely determined based solely on symptoms, as there can be an atypical presentation of HSV2 over time, but an infection with HSV1 would be the most likely and consequently the greatest concern.
There are two options at this point. Since you know that the HSV1 test was negative previously, then a positive HSV1 antibody
test would be very suspicious that these lesions are from HSV1. However, a positive HSV1 antibody test is not specific to the location of the infection. A more accurate test to determine whether these lesions are from HSV1 would be a herpes culture of a lesion with your next symptoms. A culture is most accurate when the lesion is fresh, so it is frequently a challenge to be seen by a doctor in a timely manner, but if a culture can be done timely, it is the most accurate test.
If you have any further questions, please let me know.