Opk help?

TtcMommyof1 • Wife to a wonderful man ❤️. Mommy to an amazing 6 year old girl 💕. Due 11/8 with a baby boy after 37m ttc💙
According to glow, today is my first day of my fertile day with 9% chance. I just took an opk and it's definitely positive (I've taken 1 a day for the last 4 days). Has this happened to anyone else? I usually never get a positive until my 27% day at the earliest, and glow is normally spot on.