11 DPO, AF Due in 3 days, still BFN?

Has anyone had this happen before and later get a BFP? Obviously I’m not “out” until AF is here, but my body is all sorts of wacky, and I’m worried that getting a BFN this late in the game puts me out for the month. I’m just using cheapies, but there isn’t even a squinter.

My boobs are so so heavy and erect all the time (first symptom with pregnancy #1) and while some pain is normal for me before AF, this heavy soreness isn’t. They feel so tight, all into my armpits too.

I was extremely crampy around 8dpo, but it seemed *too* crampy maybe for implantation? No cramps at all since that day. I was very bloated and gassy the next day, but that’s gone too. Other than that I’m just insanely tired, and hungry as a horse. Has anyone else gotten a BFN at 11/12 dpo, but a positive later?

Very negative ovulation test, cm is creamy, cervix is high and soft.

Waiting to miss AF to test again, but my body is weirding me out.