Cycle

Cassie
So how long does it take <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> to track my cycles to become more accurate? 
I can't tell if I'm just freaking out because I'm irregular and I know the app isn't a panacea 
Just wondering two things
-symptoms of pregnancy after 2-3 weeks of having unprotected sex
-if anyone has had difficulty with the app tracking your cycle at the first 4 months of tracking your period on this App