2 weeks late- No BFP & No AF??

I've taken 2 tests now, a week apart and both came out negative. I definitely am feeling a bit off, bloated, fatigued, food aversions, light cramping, emotional, heartburn, queasy, nauseous and light headed at times.. signs point to pregnant, but it's not showing up on tests. 😕 Anyone else have this happen and actually turn out to be pregnant? how long did it take to show up on tests? Or could something else be off? my cycles have always been normal before this.. any suggestions? Thanks ladies!