Clear blue digital

Desi 👦🏼 👼🏽👼🏽🤱🏻🤰🏻🤰🏻

I took a frer on what I thought was 10dpo and it was negative, not even a faint line. 2 days later I got a positive on clear blue digital. Is it safe to assume I implanted on 11dpo? I thought frer was supposed to be way more sensitive 🧐🤨