I am 7+ weeks pregnant and HSV PCR.

A mother can infect their baby during delivery, sometimes fatally. But if a woman had genital herpes before getting pregnant, or if they are first infected early in pregnancy, the chance that their baby will be infected is very low -- less than 1%. Women with genital herpes are examined carefully for any symptoms before giving birth. If sores or signs that an outbreak is coming show up at the time of delivery, the baby may be delivered by cesarean section (also called a C-section). The risk of infecting the baby is high (30% to 50%) when a woman is newly infected late in pregnancy, however. That's because the mother's immune system has not developed protective antibodies against the virus. Women with an older herpes infection have antibodies against the virus, which help protect the baby.

Depending on what kind of herpes infection u have which is not clear from your question u have to follow your doctors advise. As it is first trimester and if u have genital herpes then chance of infection in the baby is low .