So at my 18 week anatomy scan our baby was measuring small but only by like a week so they wanted to me to come back at 22 weeks for another scan well her abdomen and legs was measuring 3 days behind no big deal but her head was almost two weeks behind so in the morning I’m going to see a specialist for another ultrasound. Anyone else been through this and everything ok? What even causes small heads? Downs? My dr literally told me nothing so I’m sick