I wouldn't worry at all.
If you were in a long term relationship with her, and assuming she has genital hsv2, not genital hsv1, the chances of you getting it from her if she is on daily suppression is 2-3% a year. From a one time encounter without an outbreak, the chances are very, very low.
If I can give any man advice, it's that you don't ever need to pull your urethral opening apart to look for symptoms of anything. If you have herpes sores inside your urethra, it will hurt like crazy to pee, and if you have a discharge, you will notice it without investigating.
If you haven't had any symptoms by now, I'd move past it.