Any help is welcome, please comment.

Af due today/tomorrow. But still no signs or symptoms of AF like i usually do get. I had a slight sharp pain in my left pelvic area today. My CP is high closed and firm, ive had sex this evening and noticed slight bright red tinge after cleaning my self up with TP. So had my shower and checked CP and yes still high and closed.. Is this implantation bleeding? Not from this evenings deed i know lol but maybe from previous times ive had sex..