I’m confused.

Kristine • 39, ttc 👶🏼 #1 with the love of my life. Fur mom to an adorable puggle. 🐶

Is it possible to have a positive opk late this morning, like 10, and then have a negative a few hours later? Either way, there will be bd’ing today but I’m a tad confused. 🤷🏼‍♀️