Thanks for the query.
The lump you mentioned could be a Bartholin cyst
. Bartholin gland
lies near the vaginal opening, its duct opens at the labia minora
When the duct gets blocked cyst can form.
When the cyst gets infected abscess
So after consulting your doctor, she may examine you and can find out the exact cause of the problem.
You may need one course of antibiotics.
and anti inflammatory drugs help in decreasing pain.
Sitz bath can help in decreasing the symptoms.
If the problem recurs you may need marsupalization of the gland.
But don't worry that may not be needed in your case.