Different ovulaties date?

Rachel • 💙 👶🏻 Vince 09.11.2018 ~ 💑 Mario 07.20.2018 ❤️ ~ 🐶 Smokey 11.03.2016

For the record: I already changed the data in Glow! At first my ovulation date was the 9th (yesterday). But the opk came out negative, not even the faintest of faintest lines. My opk Thursday however was positive (thinking back about it). Okay, so this is my first month of taking my bbt, is it safe to say that according to my temp I did ovulate the 7th?