How accurate has Glow been for you?

AJ
I have been using it for nearly 2 years to track my period so I know when I need to carry a tampon. It was getting me spot on to the day. But now that I'm TTC, it was a bit off from the ovulation kit test. It readjusted. But last period it was wrong by one day and this one I'm late 2 days according to it. I'm afraid to do a pregnancy test now in case I'm not really late. 😣