So I have been spotting for 12 days now. It started off dark brown so I thought my period was just starting early but my period is not due until Oct 13. The spotting has been dark brown until today. Today it was a mixture of dark brown and dark red color. This has never happened to me before and I’m always regular with my periods. I’m not on birth control. I am 8 months pp with my third baby. After my period came back I have been regular. Has this happened to anyone before?