Hi, I am 8 months postpartum, I got my first postpartum period on July 6, and then another period 2 weeks later, and then again 2 weeks after that. My CNM switched my birth control 2 weeks ago from the mini pill to regular birth control since I am no longer nursing. For the past month I have had brown mucus-like discharge. Not heavy, and not constant. Sometimes it will skip a day. What could this be due to?