TMI PICTURE. please help!!!

Sarah • mom to a beautiful 6 year old Nataleigh Marie.❤ and a handsome little boy Blake William 💙

My AF ended on Aug. 23rd. My husband and I had sex on the 27,29, & 31 of aug. according to my log I am currently on day 2 of fertile window. My next AF is due Sept.20th. We were going to have sex again tonight but when I used the bathroom and wiped it was bloody. what could it be??