You can get a blood test to see if you have herpes, when you contract herpes or genital warts your blood will start producing a certain type of antibodies to fight the warts. Even if you aren't having symptoms of the infection the blood test can still identify the antibodies in your blood stream. You should contact a doctor as soon as possible and let them know of your worries.
Herpes can only be tested for when there is a break out, like the one u are having now. And baby will be ok if born while your not breaking out. See a dr while you have the blisters not when they are clear