What is going on?

Dakota • Senior in high school. Lucky to be with my handsome guy since 4/24/14
So now whenever I open this app, the little circle that say what day it is and how many days until your period say like 3% chance of pregnancy for like a second and then they go back to normal. The one time it said 7.5% chance of pregnancy and I was like what but it blinked back to normal then too.