What is going on with my chart?!

Hi ladies,

I’ve been trying to temp chart this month and feel none the wiser for doing it 😂🤷🏻‍♀️ I’m due for AF tomorrow, positive opk CD19 and ovulation was confirmed via a blood test on CD28 (ovulation confirmation blood tests happen 7 days after suspected ovulation in order to check progesterone levels) because I have PCOS and am on clomid. So yea, I have read that if you are pregnant, your temps stay high, and if not then they start to dip...mine keep going up and down! Help?