Early testing?

Amber

So, I’m 3 days late with my original AF predication based on the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a>. My periods are always somewhat irregular so it’s not that crazy for me to be “late.” My next expected date is tomorrow, I’m thinking about just going ahead and testing. I don’t know if I’m really “early” or not, it’s hard to say with me, but I’m just wondering if any of you ladies have gotten BTP from testing early? What test did you use? How early were you? Etc?