What is happening

Emily

Okay so freaking out a little bit, my period was due today according to the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> and nothing, absolutely nothing no cramps just sore breast and nausea but my temps haven’t dropped and I don’t know what it means I took a test this morning and nothing a bfn and I don’t know when I should test because I keep getting negatives so I don’t know I was thinking maybe I should just wait till the end of the month right? Here’s my chart please help!!