Most Helpful Girl
Don't start out with guilt before you even get married, no no no. Swallow your fears and just let it out. Maybe it's not as big of a deal as you think, and she will be chill with you. If it's not at least you won't have to pay for lawyers and your kid, and the whole messy divorce situation in the future. If it's meant to be you two will work through it.
Most Helpful Guy
My brothers fiance told him that she "once" had Herpes, about two weeks before they got married.