Swelling, pain, itching on upper/outer right labia minora only. dr said i do not have yeast infection. what could it be? any treatments? about 4 days

Possibly infection: This could be an infection such as yeast or bacterial vaginosis, or this could be an irritation reaction to something. Try Hydrocortisone cream for now twice a day, but if not better in a couple of days see a provider. Yeast usually is itchy with thick white discharge, while bacterial vaginosis is a frothy discharge with a fishy odor. Hope this helps.