Super confused, which do i believe?

Sarah • 29 • Baby Girl #1 11-3-19💕 • Baby Girl #2 2-8-21💕

So Flo says that today is my ovulation day but Glow says it’s not until the 23rd. Which do i believe? Flo has been pretty spot on lately with my period but when it comes to ovulation, I’m pretty clueless right now