late and negative

Ashleiy
Heh ladies. I am 3 days late according to glow. I ovulated ( positive test ) on cycle day 17-18. Now I am am cycle day 32. I usually start AF on 29-30. 2 negative pregnancy test. I have been missing a lot of sleep this month and stressed from my fathers health. Any one have any advice ? Could I still be pregnant or is AF just being ridiculous ? Also I did spot some this month. Brown spotting. Which was odd for me. I have never missed a period since I started my cycles !! What's going on :( ?