Did I ovulate?

Elizabeth

Hey everyone! Can you look at my chart and let me know if you think the ovulation day is correct? I use Daysy, which is always usually pretty accurate with the ovulation day and a temp dip. This time, it said I ovulated on a CD 16. Glow says I ovulated CD 15. According to this chart, I am 5 dpo and my temp dropped again today. I am wondering what day I actually ovulated And why the temperature drop today.

Thanks! Let me know if that’s not clear.