“We found condoms reduced the per-act risk of [HSV-2] transmission by 65% from women to men and by 96% from men to women,” Helen Rees, MD, executive director of the Wits Reproductive Health and HIV Institute, University of Witwatersrand in Johannesburg, South Africa, and colleagues wrote.
The risk for transmission from women to men was 1.7 transmissions per 1,000 unprotected sex acts (95% CI, 0.6-4.4) and 0.6 per 1,000 protected sex acts (95% CI, 0.2-1.7), or a 65% reduction in HSV-2 transmission with male condom use (95% CI, –5% to 88%).
The chances are really very low. Condoms offer significant protection - not total, but significant.
Do you know how long she's had it? Does she take antivirals? The longer she's had it, the less she's infectious (somewhat) and if she takes daily antiviral meds, that can also significantly reduce the risk.
If she had no outbreaks or symptoms, I wouldn't worry at all. Getting herpes from a one-time protected encounter is really unlikely. She should have told you before, so you can have full choices over your body, but your chances are quite low of getting it. I wouldn't worry.
She had gotten it this year, and has only had her first outbreak, and I don’t think she has had any medications yet. After the encounter, which has been 6 days so far. I have had zero efffects so far.