Can you edit how far a long you are on here?

Megan

So my other <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> says I'm 4 weeks and 5 days but on here it says I'm 4 weeks and 1 day. Usually my cycle is about 31 days but my last period came a week early but when I got on this app and it asked me how long my cycles are usually I put the 31 days so I guess because of that it says that I'm a little behind if what I actually am so I was wondering if there's a way to edit that because it's a little annoying, lol. 😂