Why does my <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> (where I tracked my period) say 6wks 4days and my <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">nurture</a> app says 5wks 6days?? The <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">nurture</a> app got my log from the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> so why aren’t they the same? It’s confusing me