I’m in a similar situation. Fully protected for both as well. I’ve had some tingling/coolness on penis followed by multiple red bumps, no blisters, that then went away. Although I did take Valtrex prior to the “symptoms” so still not sure if that’s what lessoned the symptoms. Again, I’m assuming it’s HSV2 but not confirmed yet. I have a post on here as well and will follow up with more info as it progresses.
Hopefully, it’s not HSV2 for you. Just commenting to let you know you’re not alone. Here’s to hope…
Herpes isn't transmitted by the fluids, but by the virus on the skin.
Getting herpes from a one-time protected encounter is very unlikely. It's not impossible, but very unlikely. You can get genital herpes type 1 if your partner has oral hsv1 (think cold sores) and you don't already have that, or genital hsv2 from the penis in vagina sex.
Either way, since you used a condom for everything, I honestly wouldn't worry. The chances are very low if she had no sores present.