Pls help me figure this out ...

Josita • Praying For Our Little Miracle 🙏🏼👶🏻❤️
So my S/O & I BD at the end of October, exactly a week later in early November I noticed I was lightly spotting or had blood whenever I wiped.  This is usually my early sign that AF is coming especially because I'm Irregular & she usually only comes around to visit every 3 months.At one point I wiped & noticed some light pink spotting & brown discharge. My fertile window was Nov.  20-26 & as per this app it says I ovulated yesterday, but my S/O & I last BD on the 23rd of this month... Could my light spotting be Implantation Bleeding? This app says AF isn't due till Nov. 09...
Your thoughts are greatly appreciated 😊