Cycle Day 55, AF 27 days late

I am on cycle day 55 and af is 27 days late now. I took a test when my period was 5 days late and it was a bfn. Had no symptoms of pregnancy or af at all. Now I’m 27 days late and have some symptoms. I have had mild cramps on and off for the last two days now, sometimes their light. Today I woke up nauseous and have gained awful heartburn throughout the day. The only thing I’ve eaten today was a donut because I thought I may have felt that way cause I needed to eat and all it did was make me feel worse. I’ve also had a major headache and acid reflux today. I also have a watery, white discharge. Best advice anyone? TIA ❤️