most people don't notice symptoms because they had hsv1 orally first which takes the "edge" off of a newly acquired hsv2 genital infection. You are completely negative for herpes on your testing which is why odds are you would've had very obvious symptoms.
but i've heard most people never have symptoms?
we recommend waiting 3 months minimum post encounter.
that said, if you were negative for herpes and had contracted it during an encounter, odds are you would've had very obvious genital symptoms within 2-20 days. up to you if you feel it's worth testing again or not since you've had no symptoms.
grace