It can be one diagnostic technique used in identifying pelvic inflammatory disease (in which case purulent fluid will be extracted) and ectopic pregnancy.
It makes little difference whether it is amenorrhoea, dysmenorrhoea or menorrhagia, or whether it takes the form of increased mucous or purulent secretion, or displacement.
Antibiotics are indicated when a patient notes increased sputum production, purulent sputum, increased dyspnea, has an elevated white count, or is febrile.