Definitely retest asap because if you have HSV 2 you can transmitt it to your baby at birth and it can cause serious effects on the baby. If you have HSV 2 you can start taking medication to lower your risk of having an outbreak before or during childbirth. Best of luck to you.
Which test did he do for you?
If you are pregnant be careful
just be in consultation with your doctor
doctors know the subject better than you and me