My cycles were very off the last few months. My

Last period was July 31st but I was tracking my ovulation and know I ovulated on August 29. I’ve been taking a pregnancy test every morning and I just got the faintest line today which is 10dpo. My app is telling me since I started my period July 31 that I’m already 5 weeks 3 days but I feel like that’s off by 2 weeks? Wouldn’t I only be around that 3.5 week mark if I just got the faintest line today and ovulated later..I’m so confused!