My doctor estimated my DD should be October 7th but she was measuring smaller so her said anywhere from October 7th to Oct. 11th. Besides my doctor always told be that the DD is just a rough estimate.
Im 23 weeks and 4 days today.. Im due on the 27 of October..Good luck!
Yeah thats what i figured and i know for sure when my lmp was cause it was two days before my daughters 4th birthday:) so when they tried to switch it i was upset but now ive been sticking to nov.1 and its just frustrating.
I think if your LMP & ultrasound due date difference is within 1 week. They remain unchanged. Yours is probably within that one week margin so that's why they're using it interchangeably.