For transvaginal ultrasound you can have an empty bladder Dating scans are usually recommended if there is doubt about the validity of the last menstrual period.
The nuchal test is usually done at the same time and done in conjunction with a blood test.
You won’t have known that you’re pregnant long, but your 12 week dating scan offers an exciting opportunity to see your little one developing in the womb and give you an idea of your estimated due date (EDD).
You should have your first pregnancy ultrasound scan in between 10 weeks and 13 weeks pregnant, but it can vary on a couple of other factors including where you live and how you’ve been up to the 12th week of pregnancy.
If this is the case, you will not normally need to have a full bladder as these types of ultrasound scans give a clearer picture, especially in early pregnancy.
While the scan is being carried out, the operator will usually explain what she/he is looking at, and you may be given a black-and-white printout of the picture to take home with you, as well as information and charts of various measurements.