Well, I'll tell you about my 1st son...my 1st date was Oct 18th, by an u/s to find the

about 10-12 wks or so they changed it to the 31st...by 19 wks he was measuring to the 22nd of Oct. The doc went by the 31st the whole time but I always went by the 18th because if I were to be due the 31st then I would have found I was pg at TWO WEEKS ALONG! I doubt that sooo....I just kept it the same in my head.
Guess what? He was born the 20th of Oct at 7lbs 12oz.

He was ready and I guess he probably would have been no matter which of those dates I had gone by but I just
knew that the 31st was a little off base. So, I guess my thought on it would be that you should go with which ever you feel is the correct date. If you are not sure then it won't hurt to go by the doc's new date (but I bet that you will always keep BOTH dates in mind!

). Either way the baby will come when he/she is ready...and if not and induction is an option
then the difference in those dates might rear it's head once again...