I wouldn't lie about my EDD. I have considered lying about my LMP though, but didn't in the end. I have had to chart to fall pg everytime because my cycles are so irregular and as this is my third baby, I know the drill and the stunned looks I get from medical professionals that my LMP could be that far out from my dating scan. In some ways, I think it would be easier to lie about my LMP and avoid the fuss, lecture and concern on behalf of the medical profession that should know that LMPs are not ALWAYS 28 days precisely, especially when the woman is breastfeeding. Argh! Anyway, vent over . . .

As for lying about EDD, if your baby is small for dates and you lie and say that your EDD is a week later, it will take them a lot longer to pick up that baby is not growing the way s/he should - not worth the risk in my opinion. Probably better to plough through having to explain yourself and your situation over and over again with the truth than having to fight your way out of a lie when the time comes.

Interesting thread though