I cannot say for sure whether you contracted herpes from your encounter last year, but that is a possibility. Herpes can be latent (not out in the open) for a long time, and virus can be shed when there's nothing visible. So it's conceivable that you had it all these years, or that your extramarital contact shed virus with no sore.
Either way, you have herpes now. Your risk of transmitting herpes to your husband even when there's no sore is small but not zero. Condoms do help prevent spread, but I think that insisting on regular condom use in the context of a 30-year marriage would be, among other things, hard to explain to your husband.
It seems to me that the best approach is to bring the matter out in the open. (Your husband is bound to at least wonder what may have gone on just from hearing that you have herpes.) Then you could avoid intercourse (or oral sex) just when you havfe a visible outbreak, even if that left a small risk of transmission when there's no sore.
I understand full well that it will not be easy to talk about this, but the consequences of leaving the matter undiscussed are potentially explosive, bot medically and psychologically. I therefore suggest that you wiegh your options carefully before proceeding.
Best.
Dr. Rockoff
The other man was someone I had been with for three years before meeing my husband and we were planning to marry. I walked out of the relationship, met the man who is now my husband and we married less then a year later. The other man was very hurt but went on with his life and married a very nice girl whom he loves very much but still has feelings for me. This was our only encounter since leaving him over thirty years ago. Unfortunately I can't get a hold of him to ask him if in fact it was him who transmitted the virus to me.
But my main concern was about using condoms. Is there anyone out there who does have the virus and does not use condoms with their regular partner between outbreaks? Where there any problems?
Dr. Rockoff