Ok, so i have like 5 diff <a href="https://play.google.com/store/apps/details?id=com.glow.android">ovulation apps</a> plus this <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a>. And they all say i start my period one day before my <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> says?? Why is that?? Lol. As if my tww wasn't stresful enough! 😂😂