A Bartholin cyst appearing before your period

Changes in pelvic sensitivity, moisture, clothing friction, or self-care routines around menstruation may make an existing swelling easier to notice. The important clues are the lump's position beside the vaginal opening, how it changes, and whether infection symptoms develop.

A Bartholin cyst forms when fluid cannot leave a gland through its narrow duct. A single episode near menstruation may be coincidental. If swelling repeatedly appears at the same stage of your cycle, that pattern is worth documenting and discussing with a clinician.

Menstrual blood does not flow through the Bartholin duct, and a tampon sits in the vaginal canal rather than inside the gland. However, pads, tight underwear, prolonged dampness, or rubbing may aggravate already tender vulval skin without being the original blockage.

Use unscented menstrual products that do not rub the swollen area, change them regularly, and wash gently with water. Loose, breathable clothing and warm sitz baths can ease pressure. Stop using any product that increases pain or irritates the skin.

Do not squeeze or pierce the lump. Note the cycle day when it appeared, which side is affected, whether it fully disappears afterward, and whether there is drainage. This record can help distinguish a repeated pattern from a cyst that never completely resolves.

Seek prompt care if pain becomes severe, swelling grows quickly, redness spreads, or you develop fever, chills, pus, difficulty passing urine, or a marked feeling of illness. These symptoms matter regardless of where you are in your menstrual cycle.

Arrange an appointment if the lump persists after your period, returns with later cycles, interferes with sitting or walking, or has not been medically identified. Unexplained bleeding from the lump or a hard, irregular swelling also needs examination.

Ask whether the location fits a Bartholin duct blockage, whether there are signs of an abscess, and whether another cycle-related condition should be considered. Bring your symptom notes and ask what to do if swelling returns before the next period.