No AF but BFN..

I normally have a 34 day cycle very consistently, & should have started my period Saturday. I still haven’t started, but have gotten negatives on pregnancy tests..has anyone had this happen before, & end up pregnant? I had symptoms starting Saturday as if I was going to start(cramping, bloating, wanting to eat everything, breakouts, etc) but never started. I have still been ver bloated past few days & been constantly hungry & having headaches everyday, which isn’t typically normal for me. Help!