Okay so I'm not sure if this fits into this but I'm just wondering, why are all other <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">pregnancy apps</a> say your period is different others?? Because I've downloaded a few just wondering if it was going to be the same and it wasn't. Some say my period is my for another 3 weeks others say I'm late. I'm confused. Who should I believe?