Confused?

Chantelle • I'm 22, my partner is 23. Ttc baby #1 can't wait for our little miracle, follow me or add me on Facebook and we can support eachother :)
Glow says I ovulated yesterday, but ovia says I'm going to ovulate on the 21st :/ I don't get it im confused as to when I'll actually ovulate :/ is this happening to anyone else? I dont want to take opks as that was stressing me out..