What Causes Orange Colored Vaginal Discharge?

Hi I have a 28 day cycle my first day of my last cycle was August 3 , so im expecting it September 3 , im pretty regular . But just today I notice a quick wipe of orangish discharge or blood whatever it may be , it only happen once and I do however have filshie clips on my tubes since going on four years now. I have been feeling a little different lately please ease my mind ! Thanks .