Anyone felt this before?

I’m 9DPO(not confirmed, just going off of past confirmed cycle and symptoms), and AF is due 2/11, usually by this time I have a bunch of cramping and feel blah but this month I have only had slight twinges, one sided cramps(very slight and doesn’t last long), and back ache on my left side. I BD enough during fertile window so I’m worried about the lack of symptoms. I know I’m probably overthinking a bit, but it’s sooo weird. Anyone have this happen before and get a BFP? Wondering if maybe this could be a good thing....