this is something that has been confusing me for a while now. when i had a scan at 25weeks the widwife told me the due date would be 13/08/05. although when i made my counter and entered this date it makes me 26weeks and 4 days today. although when i saw the midwife this morning she said that today was the beginning of weeks27 so i had reached the 3rd trimester. i know its only a few days difference but im wondering how accurate this is and if it would be the midwife giving me a false due date or if she had just miscalcutated on the spin the wheel chart thing that she used? do you think i should change the counter so i have the right amunt of days as the midwife says or just go with the counter?