I just had my first outbreak and tested negative for IgG (meaning my exposure was recently) the only possibility is that my husband of 15 years is an asymptomatic carrier. You can imagine my utter shock. As we were trying to unpack this he mentioned he had a cold sore once as a kid but never again. Of course he could also be packing hsv2 around. I won't know for sure unless he gets tested, which he may or may not do.
Anyway, as someone who is kind of in your wife's situation I believe your wife is completely out of line. You should not feel bad and she should not be mad at you. Sad. Scared. Unsure of what to expect. Confused. Frustrated. Sure. But not mad at you. Mad at crappy sex education, yes, but not mad at you. Not. Mad. At. You. You did nothing wrong. If I were in your situation I'd tell her to stop being so deplorable. How she is acting is not how you treat your partner and father of your child. Of course I'm assuming in all areas of your relationship you've been decent to her.
Had I known my husband had herpes (again, I'm assuming until lab tests come back) I'd get herpes again. And again. And then again. Why? Because my husband is awesome. And we're awesome together. Besides, soon enough there'll be a vaccine and the stigma of herpes will be gone quicker than you can say vaccinate.