Okay so I had this app on my old phone, and it was up to date with my last period and when I downloaded it on this phone some time last week it told me I was a day late on my period. I postponed it for a week. My question is if it just does that when you download it, and it's a glitch or am I actually like a week late now? (Don't mean to sound stupid I'm just new to this app and I'm not sure how accurate it is)