Plymouth

I had genial herpes during pregnancy, not a genital outbreak but sores on my thumb. This was 22 years ago and I am worried he might be a carrier and doesn't no it. I know if he gets symptoms he needs to get treatment quickly to reduce the occurrence and severity of further outbreaks but I don't know how high the risk of transmission during pregnancy was and whether I should put him and me through the trauma of disclosing. Any advice ir info would be great fully received xxx