What’s going on this month??

I have a shorter cycle, I’ve been averaging 25 days since my daughter was born 11 months ago (currently breastfeeding) . I’m currently 3 days late and and have zero signs my period is coming but I keep testing negative. Absolutely nothing in my life has changed, no added stress, no medications, etc. I just don’t even know what to think anymore 🤦🏼‍♀️ has this happened to any of you and what was the outcome?

Tests that I just took: