8 days late!!! I want to cry

I’m extremely regular. Been tracking for a year and my period is always on time. Taken several HPT and all negative. Been also taking ovulation test (out of curiosity) all blazing positive for the past 4 days. No idea what to think. Lots of white and water CM. Very bloated and abdomen feels stiff. Has this happened to anyone? Can you shed some light please.