HELP!!

Kendra
Hello all, i will be a first time mommy if I have conceived. Here is my issue: I had sex with my partner during the time that glow says I am most fertile. I haven't had any weird symptoms it's been 10 days DPO and I was supposed to see AF today. I have not started. I got excited and tested and it was BFN! I have a no cramping no bleeding no spotting no sickness no sore breasts or anything. Could I still be pregnant or is it a fluke?