Can I spread herpes while on Valtrex?

I have been taking valtrex religiously ever since my 1st out break (it was horrible). However, since then I've only had two-three noticeable outbreaks, which have been mild and have cleared up quickly. I have only had one partner since my infection and we haven't been too sexually active because of my fear of spreading the disease. Recently we have had intercourse and oral sex, at a time in which I wasn't experiencing any normal symptoms (such as boils, sores or that tingling feeling) but I had just finished my period, which is when symptoms have occurred for me in the past once. I did notice some redness around my vaginal area, but it was only like skin irritation; I've felt this discomfort before due to the panty liners I use during my cycle, but we've never had sex after my periods. There were no sores open or closed, or abrasion; just slight irritation around my outer vaginal area.  My partner and I always use condoms and are extremely cautious during and after oral sex (we rinse with germ killers and brush, then shower immediately). Now we have had intercourse after and outbreak has healed once, and there were no problems. There were no open sores or abrasion of any kind and I felt safe, but I am still very nervous about this time. Could he be infected?