fertile days on glow

So today I went on the app and I'm on cd10 and I also did a ovulation test and got flashing smiley. So I put that on glow and it changed it to green which is obviously a fertile day. Is cd 10 normal or is it early to have a fertile day. Iv been trying for years and years and never used opks. I'm wondering if this is where I'm going wrong. That I ovulate abit earlier than normal?.