Charting experts please help!

Tara • I'm 22, have two little boys and married to the love of my life. Miscarried 7/2015 👼🏼 expecting our rainbow 11/2016 🌈
Still can't figure out when I ovulated based off my chart. I use glow and FF and they are both saying I O'd on different days. FF is saying CD14. If it helps I had EWCM on CD 10 & 11 and POS opk's on cycle days 11 and 12. If anyone can explain this to me I'd really appreciate it thank you!