What y'all think?

Alyssa
We baby danced alotttt in my fertile days! Really no telling what day I may have conceived! 
BUT, according to Glow...my expected AF is due tomorrow. 
Usually if I start AF, it's heavyyyy and only gets heavier. 
I started spotting today. 
Every time I wipe I see it...but hasn't gotten heavy at all. 
I feel so great today, no period symptoms at all which is unreal to me. Just spotting. 
What are your thoughts on this? 
I plan on testing tomorrow morning-scared of BFN