Baby measuring behind

shai • Raising my rainbow daughter while growing her twin sisters🤍

Hello! I’m pregnant 19+6w with mono-di twins. Yesterday I had an ultrasound and we found out twin B is measuring around a week behind than twin A :( both amniotic fluid and Doppler are normal. I have another scan in a week. Anyone went through the same thing? How did it go? I’m too concerned I can’t not stress about it 😭