My periods are really regular give or take a day or two but for the most part super regular. My fertile week for October was the 23-29 I believe I ovulated around the 26-27.  My period isn't due until the 11th. Suddenly today I started spotting it was a light reddish brown color when I wiped and a very small amount in the toilet. Put on a pad and have barely bled into the pad but maybe a qtr sized amount...has anyone ever had heavier implantation?