When am i ovulating?

Hello everyone. Okay so i have a regular cycle everytime i get my period its in between like 28 or 29 days. BUT i was actuslly late by 34 days.. can someone please help me on how i can know when im ovulating?

Freaks me out because i have the flo and <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a>. And they have differrent predictions... help ):