I am 7 mos postpartum after baby # 2. Since my periods returned they are so unpredictable and unusual. One month it’s light spotting for 3 days. Next month it’s heavy bleeding with clots lasting 7-10 days. I’m on birth control so I am confused as to why this is happening. Has this happened to anyone else after having a baby? My periods became lighter after having my first. I also had one ovary removed about a month before I got pregnant. Could this be the cause?