first trimester scans
Weeks 11, 12, 13

First Trimester

Ultrasound Sonogram

Baby developing inside you
over the weeks and months
Weeks 11, 12, 13 ultrasound sonogram


First Trimester Scans

Weeks 11, 12 and 13

The first trimester is months one, two, and three of your pregnancy.
Below are scan pictures taken during weeks 11, 12 and 13 of pregnancy.

It is recommended that all pregnant women have a scan in the first trimester, to date the pregnancy and to see any problems there may be in the pregnancy (low lying placenta, twins etc.). Scans in early pregnancy are usually performed in the first trimester around 12 weeks. You may have a earlier scan, if you are experiencing pain or bleeding for example or unsure of your LMP dates.

Transabdominal ultrasound (TAU) and also the transvaginal ultrasound (TVU) are valuable diagnostic tools in obstetrics and gynecology.

Transabdominal ultrasound will provide a panoramic view of the abdomen and pelvis and is noninvasive, whereas transvaginal ultrasound provides a more limited pelvic view and requires insertion of a probe into the vagina.

While your sonographer takes measurments they will explain what you are looking at. It may not be easy for you to make out what you are seeing on the screen in the early scans. The images below will give you an idea of what can be seen and what they look for at each week; of the first trimester.

Scans for week:
 |  4  |  5  |  6  |  7  |  8  |  9  |  10  |  11  |  12  |  13  | 



11 Weeks Scan

Week eleven ultrasound scans      CRL = 41mm to 54mm
CRL Length = 1.6 to 2 inch   Weight = 7g  OR  0.25oz
Eleven week sonogram
11 Weeks Scan
week 11 3D
Eleven week ultrasound

Week 11 Fetal Development


Week 12 Scans

CRL= 41mm to 54mm     CRL= 2.2 to 2.9 inch.
Weight = 14g  OR  0.5oz
week 12 ultrasound
Week 12 Scan
week 12 sonogram

first ultrasound scan


The 12 weeks scan [10 weeks fetal age] above shows a very active fetus. The mother who can not feel these movements, laughs as she looks at the screen and can see her tiny baby kicking out.

The nuchal translucency (NT) 12 week scan is a routine ultrasound examination carried out at 10 to 14 weeks of gestation.

Most NT ultrasound scans reveal a healthy and normal baby, or sometimes multiples. A standard prenatal ultrasound exam usually takes about 20 - 30 minutes.

Twins sonogram scan
mono amniotic twins

Twins sonogram scan

Twins in the same sack
are referred to as
'mono amniotic twins'
Week 12 Fetal Development



13 Weeks Scan

CRL= 74mm to 87mm   CRL= 2.9 to 3.4 inch
Weight = 23g = 0.8oz  
13 Weeks Scan
first trimester scan
13 Week ultrascan
sonogram week13

Week 13 Fetal Development

More Ultrasound Scan Information:

Fetal growth percentile charts  |  Fetal Growth Percentile Calculator

Charts and tables for: - CRL - BPD - OFD - HC - HL - FL scan measurements.

Top baby gender predictor test

Enjoy - First class FREE shipping anywhere in the world.
Boy or Girl? Gender prediction test

If you liked this page, please share it, or give it a Like, +1, Tweet, or Pin.


  Menu baby gender predictor test

The gender prediction test result is easy to read!   The control test window will change color to either pink (Girl) or blue (Boy).

Boy or Girl?
Gender prediction test

Enjoy - First class
FREE shipping anywhere in the world.

  Baby Extras

  Baby Growth










Names Search

Enter a name
or word that
appear in its meaning:


External Links

Review on