9 Weeks 2 Days or 8 Weeks and 5 Days?

Uni B. • 💋 Mommy to a Princess 👑💛
I'm 9 weeks 2 days and got my first ultrasound. Baby is measuring 8 weeks and 5 days 😩. Should I change my apps to match those 3 days it's off ? It seems like forever off tbh 😪. Anyway I'm so excited!! Heartbeat is 166bpm & everything looks great 😁