Feeling down

Did everything right this month, opks, prenatal vitamins, preseed, and still negative tests according to glow AF was due a week ago and the other app i have says it is due today but still no signs of it, thanks to pcos I never know when to expect it. On top of that disappointment a coworker tells me how easy it was for her to accidentally get pregnant after she had an abortion a yr ago. I feel upset and hurt mostly because of jealousy, I just don't understand how people who don't even want a baby can have one then others of us who have been trying for months and years cant!