Hello, * The brown vaginal spotting is not associated with birth control pills, the cause of such issue sound to be vaginal infection either secondary to sexual intercourse or a sequence of urinary tract infection most likely. * Kindly allow her following for - intake of more liquids - strict vaginal hygiene care - extra precautions in the menses period for regular changes of tampons - avoid sexual intercourse if active at present - prescription of necessary antibiotic and antifungal medications for best recovery at earliest. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Bhagyesh V. Patel, General Surgeon