Confused what's going on

Melanie
So I was just hoping for some feedback... I've been tryin to conceive for about 6 months now. My period is pretty regular, 28 day cycle.. Today is cc29, supposed to be first day of my period. Usually I wake up to it but nothin yet. I thought I was not preggo because I had pain around my ovaries the last few days, kinda common pms symptom for me. So I took a preg test today and negative. Do you think stress is causing me to be late, or could the test be wrong? Thanks for any advice....