Pregnancy dating by lmp Dating women with skype for free sex
Keep in mind, there are some women who buy at home dopplers (which are a type of ultrasound technology), have to get frequent scans because of high risk or twins, or get hours long private 3-D ultrasounds.
One extra ultrasound won't harm your baby in the slightest.
You may have calculated the length of your pregnancy from the first day of your last menstrual period (LMP).
I don't think there's been enough research to show how safe they are for pregnancy, so other than the anatomy scan at 20 weeks I was hoping we wouldn't need any others. That said it would probably be the only option if there is no LMP to go by and you choose not to have an U/S. :) If you don't know when you last had your period the only way to date your pregnancy is with an ultrasound.I had my second at 39 weeks but never measured bigger than 34 weeks. The point of the scan is to work out how many weeks pregnant you are. Ectopic pregnancy and miscarriage: diagnosis and initial management CG 154. This means that accurate dating reduces your chance of having your labour induced because your baby is thought to be overdue. It may also help you to avoid feeling disappointed towards the end of your pregnancy if you think your baby is late when he's not.