Really abnormal AF

Ok, AF was due today. Had light spotting yesterday 11DPIUI/10DPO; I mean there was nothing on the liner. Today super light. I'm usually full on cramps and heavy bleeding with clots. Light bleeding. Today it's like I'm on the tail end of my period. I'm so confused. I'm 12DPIUI, 11DPO, CD28. I will just have to wait and see, if it stops abruptly, continues or come full head on. Why can't TTC be easy?