In very rare cases, a person could transfer oral herpes to their genitals by touching a cold sore, then directly touching their penis or vagina. However, this is highly unlikely. The Herpes Simplex Virus is most easily transmitted through mouth-to-mouth, genital-to-mouth, or genital-to-genital contact. However, if you are experiencing itching, burning with urination, or pain in the genital area, be sure to see a healthcare provider soon. The bump may be part of an infection, or it may be a harmless, normal part of your genitals. A Teen Clinic practitoner can help you learn the difference.