Before I even read your question in its entirety, my response--simply to the title of your question--is a simple no. To my knowledge HSV-2 (the most likely cause of your partner's herpes) has never been transmitted nonsexually to household members.
Now to your question: I really cannot predict the risk. On the one hand, among monogamous couples in which one has herpes due to HSV-2, and having sex 2-3 times a week, the average risk of transmission is 3-4% per year; so the risk for any particular exposure is low. On the other hand, transmission is much more likely in the first few months of a relationship; and since she had a lesion within a few days of one of your sexual exposures, the odds are good that you were exposed when she was shedding virus.
Don't worry about your kids, just your wife; she might not yet be infected. You should avoid sex with her (or use condoms) until you wait at least 3-4 weeks after your last sex with your other partner and haven't had symptoms to suggest infection; and until you learn your current blood test is negative. To be absolutely certain, you will need to have yet another blood test around 3 months after the last exposure to your infected partner.
Good luck-- HHH, MD
None. If it turns out you have herpes, you have nothing to worry about. Herpes is a *sexually transmitted disease*, and not transmittable through casual household contact. You don't have to worry at all about giving it to your kids.
It can be passed to children durning the birth process, so if you passed it to your wife and she then had a child and a herpes eruption it would be reason for c section delivery.
Herpes can be very dangerous if passed to a baby during birth.