It could be recurrent folliculitis or bartholin’s cyst or gartners cyst. It could be infective which can be treated with broad spectrum antibiotics ( preferably cephalosporin group as it is safe in pregnancy) for 5-7days , along with analgesics. If persistent or aggravating despite the above medications, might have to plan for marsupilisation for the cyst.
Next Steps
Review after 1 week or any time before if symptoms worsen
Health Tips
Avoid shaving the genital region, prefer to do only hair clipping or trimming