Thanks for the query. Although I do not have a picture of the lesion to comment on, by your description of the consistency and the location this could be a Bartholin cyst
, which is a cyst that forms from a "clogged" gland in your perineum
, classically around the vicinity of the vaginal opening.
Your specialist can take a look at it during a pelvic examination and determine if this is the case; it is a benign lesion if such is the diagnosis.
Hope that helps, wish you the best,
Dr Brenes-Salazar MD
Mayo Clinic MN