i am assuming that you are not using a hormonal form of birth control (e. g. pill/patch/ring/shot). if this is correct then my best guess is as follows. your normal cycle is usually 24 days from the start of one flow to the start of another. this month it sounds like you started the light brown discharge on cycle day19 or so. this might represent premenstrual spotting. this type of spotting can begin as much as a week before flow. some women will get it every month a few days before flow. the usual cause is a missed ovulation or a decline in progesterone level that month. this is not an uncommon or worrisome thing unless it happens every month. of course if you have any risks for pregnancy that should be ruled out. a reliable pregnancy test done on cycle day 28-30 should be done if you are sexually active. if the test is negative and you have no risks for a new chlamydia infection you could choose to self monitor through the next cycle. hopefully your "normal-for-you" pattern will reset it self naturally. if erratic bleeding persists see your gyn or local family planning clinic. lastly if you are using hormonal birth control then this would likely represent breakthrough bleeding from the hormones in your birth control method.
my period stopped two weeks ago and i now have a light brown discharge. it's 24 days between periods. what’s happening?