Brown spotting for a month?!

Nicole

So I’ve been having brown spotting that has been off and on since the beginning of this of this month (Aug11). My period arrived late and was a little abnormal (Aug 24-28)... not very crampy and shorter than usual. well period is over and the brown spotting continues. Any ideas? I have an appointment with my gyno next week. And I am not pregnant. Not on any birth control.