12 week dating scan nhs

01-Feb-2017 08:16

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When I se my ob in a few weeks I'll see what she thinks about officially changing my due date.

From what I've heard,most often lmp is used because most don't know the date of conception but lmp is not as accurate.

I have a 32 day cycle and by that, my LMP EDD was the 13th of December and my 12 week scan gave me an EDD of 12th December, so I'd say its pretty darn accurate My 12 wk scan put me a whole week ahead vs my lmp date.

My lmp is good, because I was keeping track, but I truly don't know when I ovulated, so yeah..moved my edd up a week and lo has been growing consistently within that week's size, so what do I know? The dating scan should be the most reliable, but end of the day you're talking maybe a maximum of 2 weeks discrepancy (which is rare anyway) and as a baby can come over a 5 week period there isn't a need to stress.

Ask your GP if you want to have one anyway for extra reassurance, as she may be able to refer you.

Dating scans are the most accurate way of predicting your due date.

LMP is only used until the dating scan as it's the best guess until they measure the baby.

However, if all is going well in this pregnancy, your particular hospital may not offer the scan.NICE recommends it's done between 10 weeks and 13 weeks. Before the scan you will be asked to drink a lot of water and have a full bladder, as this puts the uterus in a better position to be scanned.This can be a bit of an uncomfortable challenge if your scanning clinic has particularly long waiting times.Don't worry, it's painless and there's no evidence it harms you or your baby.

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The clarity of the picture depends on a number of things, for instance if you have any abdominal scarring the picture may not be as clear.However, conception doesn't actually occur until around 14 days after your LMP, or later if your cycle is longer than 28 days. The rhetoric of "natural" in natural childbirth: childbearing women's perspectives on prolonged pregnancy and induction of labour.