Baby wish

Hi everyone! I've been trying to conceive for my third baby for a year now. I've had two miscarriages and one ectopic pregnancy. For the past 9 months, I've always had a 28-day cycle, and I usually get brown discharge 3 days before my period starts. But this time, I don't have that. Today is my expected period day, and there's still nothing. I took a Kruidvat test (2v5) this morning, but it was negative. It's been 5 years since my daughter was born, so I don't remember exactly how many days before my period I tested positive back then. My question is: does this happen more often after your expected period date? Thanks!