ho doc. my periods were irregular so i am not sure about my last lmp date but when i did my first scan for fetal heartbeat my edd was 22 feb but it changed in nt nb scan to 18 feb. can you tell me which one to consider ??

A. You’re not aware about your last period date I suggest you take 18 February into consideration if it happens that time it’s okay otherwise sometimes deliveries can happen a week more than estimated delivery date also but for right now you should take the 18th into consideration