Whatcha think? Was my surge yesterday??

Marlei Mae • Happily Engaged✨Mommy to a little girl✨Baby #2 on the way 💙

Top pic is from this morning and bottom pic is from yesterday. Can it fluctuate before a surge? My test from yesterday doesn’t look quite there. This is my first time opking so I need some advice. I’ll keep testing so I can learn more about my body. Thanks in advance.