I have never had any cold sores or fever blisters or blisters of any kind any where.  Just recently I did an std testing.  The only thing that came up positive was herpes simplex 1.  I am 52 and have been premenopausal forabout ten years now.   I am not sure if this is a false positive.
Hello! Most commonly Herpes Simplex 1 would transmit orally - Kissing, Sharing same plates, Sharing food, lip balm. Other risk factors are having multiple sex partners, sex at a younger age having other sexually transmitted infection, or a weakened immune system. Do not worry. Get a retest done specifically for herpes. Even if it does come positive there is no need to panic. Your doctor might wish to prescribe you Acyclovir or acyclovir. Most cases of herpes disappear without need of intervention. Even if the virus stays in the immune system for a long time, it will not manifest with symptoms nor transmit to others if adequately treated.