Ovulation Question

Alex • ♡Shyla Rose 7.29.07♡Liam Sawyer 4.11.20♡ Due 10.3.21

Had positive opk yesterday (cd14) which should mean I ovulated today (I have ovulation cramps so I know I am) but todays test was negative (bottom test) and when I logged it Glow changed my O date to yesterday? Why?