I have used the mydays app for awhile. I just recently got the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a>. But both apps are saying I'll start my period on different days and ovulate different days. I went ahead this month and made sure to have sex the whole week on both apps it said I was fertile. Glow says I should have start my period yesterday and the mydays app says I'll start the 28th. Idk which to go with!?! Should I try and take a pregnancy test now or wait??