Glow or my calendar app? Which one is right?
My <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> says my period is due the 11th of next month and my calendar app says my next period is due tomorrow the 1st of February. I plugged in all the right info on both apps so why Isnt my expected period on the same day or around the same day? What should I do? No rude comments plz.