Like judy said bumps can be anything. You will need to be checked by a doctor if you are concerned. You can either go to your gyn or you can seek a dermatologist assistance.
It could be warts, growth, but I wouldn't worry to much, usually these small white bumps should go away on their own within 2-3 weeks. All women's body respond differently. It's time to make an appointment with a gynecologist and get them checked out. Don't wait and also get rechecked for STD.