Nuva ring

I just got my first birth control. The nuva ring. My last period was Sep 30-Oct 6th. I put my nuva ring in Oct 16. Should I keep my ring in for three weeks or take it out when <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> says my period will be due? I’m kinda worried that my period will be all messed up now. This is part of the reason I’ve taken so long to get on BC because it messes with the natural balance of my body.