Based on the location and description provided this could be either a simple cyst
, a Bartholin's cyst, or on detailed physical examination depending on the exact location and issue with the hair follicle as well (eg. Ingrown hair, folliculitis
I would advise you to start off with several sitz baths a day with war water and epsom salt. You could also apply warm compresses to the region during the day.
I shall rest assured as you will be visiting your doctor soon and a physical examination will ensure proper diagnosis and treatment.
In the meantime, abstain from all forms of sexual contact and do not irritate the affected region.
Hope this helps.