Sayang, I really think you should see your doctor or go to the clinic again about this, genital herpes after birth needs proper medical follow-up, especially if you're still uncomfortable. Your doctor is the best person to recommend the right cream or ointment for your situation and to make sure everything is healing okay. I know a few of us mummies have dealt with postpartum healing issues, and honestly the antiviral your doctor gave is the main thing doing the work, the cream your doctor suggests on top of that will be safest for you, especially if you're breastfeeding. Don't worry, take care of yourself.