*please help me understand dates*

[sparklingreactions]

all replies have said they didnt understand my post so ill try again would REALLYYY appreciate if anyone could give me knowlogable answer as im really confused lol here i go...

i had a period may 25th 08
i have a 35 day cycle
i had sex june 16t 08
had a scan that showed 8 weeks on july 30th (this put my period at a week later than it was but minus the 2 weeks before i concieved it pretty much went back to the day i concieved)
had a 2nd scan that showed 13+1 (4 days less that the 1st scan showed they took my due date of 15th march 09 from this)
then 3rd scan at 21 weeks(tied in exactly with the 1st scan)
my due date is march 14
my question is would you trust this or could i have gotton pregnant before that period the month before as ppl keep commenting how 'big' i am for 28 weeks! would you trust these scans as i dont want 2 go over by a month could it be possible? anyone please help xxxxx

Yes I would trust the scans. Your baby will arrive when it's ready, the dates are only estimates at the end of the day and you could go 2 weeks either side of your due date. I was 18 days late with my ds and everyone said I would go early because I was sooooo big.
Good luck xx

can dating scans at 8 weeks be as much as 3-4 weeks out? baby showed 2 be growing at the same rate on all scans?

I think you can trust the scans. Dont listen to what random people say about the size of your bump. Even a midwife will use measuring tape, so someone who isnt a midwife just looking isnt going to be accurate!

The earlier the scan, the more accurate it is, so go with it! Don't worry about what people say, sooner or later somebody will tell you you are awfully small...