Genital herpes and childbirth?

I'm 37 weeks pregnant and I tested positive for HSV antibodies at my 36 week appointment. I'm starting the valtrex tomorrow, but I am extremely concerned about passing this horrible virus on to the baby, as the effects can be detrimental. I have never had an outbreak before, at least not to my knowledge. I know people can have asymptomatic breakouts. I asked my midwife about this, and she said that if I don't have any active lesions, the virus won't spread to my baby, and I won't have a c-section. I still feel very uncomfortable. My question is, if I'm taking the valtrex, can I still pass the virus to my baby during natural birth? Would a c-section be a better option? Have any other women given vaginal birth to a baby with genital herpes without any complications? Please help, I'm very upset and uncomfortable.