Missed period on IUD

Ne

Can someone explain to me how I’m 8 days late with negative tests!?! I’ve been on the paragard for a year now and this has never happened. My strings do feel kinda low but they are there. Super confused

Side note: I do have a yeast infection on the moment so maybe that’s the cause?

Oh and before y’all jump on my neck and tell me to go see my doc I am making an appointment tomorrow 🙄😂😂