TTC month 5!

Ok ladies I feel like I’m finally getting my cycle on track and this month has been a crazy journey so far but I have a question. I use another ovulation tracker app to better the chances to conceive. This month I finally got my first positive ovulation test but according to the app I’m like 4dpo and CD 21-22 can someone please tell me it’s normal and I’m still in the game for a BFP in two weeks?