Feel like the baby is bigger! Maybe?

Jenna • Had my beautiful son in May 2017. Baby #2 due September 2020❤️
I'm supposed to be 11 weeks 4 days today and yesterday I got an ultrasound making me 11 weeks 3 days. I feel like the baby is bigger than 11 weeks. Maybe someone can give some input. I won't hear back from the doctor in 2 weeks since this was an ultrasound to look for Down syndrome