Dear doctor,I have one question about syphilis.Before seven or eight months had I sexuall activity with a prositute,no oral sex and under the protection of condom.At that time I got no sore and on wound near my penis and my body was all right and fine in these 8 months.So I wonder whether I will be infected? Will those "Invisible syphilis" happen to me?I have done another test in the CDC institution of my city and I am very worried to get the result.