Negative test (4 days late).... what’s going on??? 😫

So let me be clear, I’m NEVER late. Like never. My periods are usually on the shorter end 24-25 days, and have been like clockwork. Always a 12 day luteal phase. This is the first time I’ve went super late with no issues that should have caused it (stress/travel/etc). Have taken two tests and they could not be more negative. BBT just keeps fluctuating about .20-.30 above cover line, not super high like pregnancy. This ever happened to any of the regular girls out there?? I’m assuming a test should be positive at this point? If not, any ways to get stupid AF to come visit? If I’m not pregnant, I def want her to come lol!!