What to Expect in the 11th Week of Pregnancy
First Trimester Ultrasound
11 Weeks Pregnant
Your baby looks like a little person now, though his body is out of proportion - the head takes up nearly 50% of his entire length! Baby will start having the hiccups this week, as his diaphragm develops under his lungs. The intestines are still coiled in the umbilical cord, but those will start to migrate into the abdomen soon.
Despite frequent hiccups and movement, you will not feel the baby move for a few more weeks. At just over 1½ inches long, baby still isn't quite big enough for those kicks to be felt! Morning sickness may begin to ease during this week, though some women will struggle with nausea for a bit longer.
The Baby at 11 Weeks
Hair follicles continue to develop on baby's skin this week. Fingernails appear on those long little fingers, and his ears have obtained their final position on the sides of his head. The toes are now separated (no more webbed feet!) and the ovaries have developed if baby is a girl.
The bones are starting to harden, which will give baby a bit more force for those kicks he's been practicing! All of the major joints (ankles, knees, wrists, elbows) are functional now. Baby moves frequently, and has plenty of room to roll, kick, and flip. The genitals start to take on their female or male forms, though the changes aren't detectable by ultrasound yet.
Healthy Food in Pregnancy
Your Body at 11 Weeks
Some of the early pregnancy symptoms may begin to abate this week, as nausea and fatigue begin to lessen. Some women will struggle with fatigue and morning sickness for a while longer, and this is completely normal. The second trimester doesn't officially start until the 13th week of pregnancy, so don't feel defeated if your aversion to food lasts a little longer!
Some symptoms you may be feeling this week include:
- Nausea, which may be abating.
- Increased hunger as nausea dissipates.
- A disappearing waistline.
Eat protein and complex carbohydrates to keep your energy levels up. Avoid sugary foods, as these will give an initial burst of energy followed by a slump. Growing a baby is hard work, and the fatigue you feel is entirely normal!
Nuchal Translucency Measurements
Nuchal Translucency Screening Poll
Did you have the NTS scan performed?
Nuchal Translucency Screening
The Nuchal Translucency Screening, or NTS, is an ultrasound screening done between 11-13 weeks of pregnancy. In the past, the screening was only offered to women in high risk groups or to pregnant women of advanced maternal age. Currently, the NTS is offered to all women, regardless of risk level.
The NTS scan is generally combined with blood work that detects levels of free beta human chorionic gonadotropin (free beta hCG) and pregnancy associated plasma protein A, or PAPP-A. The combined tests are called the first trimester screen, and are used to generate a risk level for having a baby with Down Syndrome or other rare chromosomal anomalies.
The NTS measures the amount of fluid in the base of the baby's neck. Increased amounts of fluid are associated with chromosomal defects and cardiac defects. The presence of a nasal bone and facial angle measurements will also be noted. Some babies have increased fluid levels and have absolutely no genetic or heart defects, so the NTS is not diagnostic. Its only purpose is to provide a risk level. In fact, 90% of fetuses at 12 weeks with a nuchal translucency of 3.0 mm ("high risk") have no abnormalities. Unfortunately, the risk level increases with the size of the NT, and only 10% of babies with a measurement of 6.0 mm will be born without major birth defects.
Women who are deemed to have a "high risk" level for chromosomal problems are given the option to have diagnostic testing done. Chorionic Villus Sampling (CVS) or Amniocentesis may be offered to women in the high risk group. CVS may be performed from 10-12 weeks of pregnancy, giving a woman information about the pregnancy in the first trimester. The test carries a slight chance of miscarriage (miscarriage rates are slightly higher when the test is performed through the cervix rather than through the abdomen via needle).
Amniocentesis is typically performed during weeks 15-20 of pregnancy. This test cannot be performed earlier because the baby may be harmed. Amniocentesis also carries an extremely low risk of miscarriage, though the risk is far less than 1% and has been declining as the technique and physician's experience level has improved.
Reasons for declining the NTS include:
- No plans to do any diagnostic follow-up testing, even if a high risk level is determined.
- Not wanting to have the stress associated with high or borderline numbers.
- A desire for little medical intervention during pregnancy.
Reasons for choosing to have the NTS include:
- Wanting to have as much information as possible about the pregnancy.
- A desire for reassurance that the baby is healthy.
- Having information to make a decision about having CVS or amniocentesis performed.
- Wanting to be prepared in advance for the birth of a child with special needs.
- The ability to terminate a pregnancy with severe or non-viable birth defects in the first trimester.
The last day the NTS may be performed is at 13 weeks and 6 days of pregnancy. After this point in time, the baby's lymph system develops and the extra fluid in the neck will drain, making the test impossible to perform.
Nuchal Translucency and Risk Factor
< 2.5 mm
2.5 - 3.5 mm
Fetal echocardiogram and level II sonogram may be recommended. Amniocentesis or CVS may be offered.
> 3.5 mm
Genetic counseling, fetal echocardiogram, and level II sonogram may be recommended. Amniocentesis or CVS will be offered.