Cycle

Mairghread • 13•8th Grade•BaseBall•Violin•Oldest of 3

Is there anyway to change the calendar on this because it has my cycle all fucked up. It says I'm supposed to get my period in 5 days but according to my written calendar i get it in around 18 days. The app is going to basically say I'm late then its going to say i start it during ovulation😡😡