Please help. Urgent

Viji

Hi. I am 7 days late from my Dec 10th period. I know I am not preg and ill say without testing for sure. Even if i test,it will be negative! One side i dont want to AF to appear and another side I am worried if this AF thing would be a perm issue of not occuring as I have regular cycle with PCOS. We both bedded 5 days of 14,15,18,20&21st Nov. Please help me. Cd i be preg or my AF wd occur soon?