Barely spotting

So I've been checking my cervix daily and my AF is due Saturday (in 2 days) and I've been cramping thinking for sure she's coming early. When I did my cervical check I had slightly pink discharge but since then nothing.

Not even when I wipe.

I did the deed cycle day 16 so I know I missed my chance but glow still called it a fertile day.

Anyone experience this and had AF not show up? Usually I'd I spot AF is there within an hour. I guess I just have high hopes..