Soooo I’ve had unprotected sex a little before my period was due and it was kinda light and weird. So my question is for the past two weeks I’ve watch <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> tell me my chances of being pregnant are rising... I’m at 37% chance of pregnancy. And although the app has no direct correlation to that. HOW DOES IT KNOW TAHT I MISGHT BE PREGNANT. I feel like the chances are very likely but I wanna k ow how the app does it.