I am on oral contraceptive and was expecting my period yesterday.what inoticed is some brown sticky like substance when i wipe can you say what's that.?

One-time symptoms?: A doctor can check to see if there is a medical issue, if a woman has mild menstrual-related symptoms. Many women have some variation of their mucus discharge, their periods, or a missed period on occasion. Some women feel normal after a few days, but others have bothersome symptoms and follow-up with their doctors. Sometimes, minor fluctuations in a woman's hormones changes the mucus coming out.