Don't feel pregnant

Meli • Twin Mama! To my beautiful princesses. 💕💕 Going through life one day at a time with massive amounts of anxiety 🤷🏻‍♀️
I'm 9DPO today and I don't feel pregnant. I just got sore boobs and I always get sore boobs a week in a half before AF. I'm getting worried that I'm out this month. Does it mean I'm not pregnant? I always thought that I would just know before taking a pregnancy test