Hi ladies, I could use some help.

I'm feeling quite down and confused.. glow said I was in my fertile week last week and I record my bbt regularly however, it remained constant through my green dots lol. But this week it dropped then spiked, I'm confused. Does this mean I was ovulating after glows calculations ?? I'm ttc baby #1 and am happily married, it's been almost 6 months and I never anticipated it being this difficult, I'm 22 and just figured it was going to be easier. Any insight is so much appreciated. Thanks ladies !