Breaking News
Home / Calendar / The 1st trimester of pregnancy / The 3rd week of pregnancy: what happens to the baby and Mom

The 3rd week of pregnancy: what happens to the baby and Mom

The 3rd obstetric week of pregnancy is the transitional stage from “planning” to “forming.” At this exact time, fertilization of the egg and active formation of the fetus has begun. Therefore, some moms call this period the first week of pregnancy (from conception).

The fertilized egg at this time heads into the uterus and attaches to its wall. At this stage, during cell division, it is decided how many embryos there will be – one, two or even three.

The size and development of the fetus in the 3rd week of pregnanc

The size of the baby at the 3rd week of pregnancy

At the very beginning of the third week of pregnancy, the zygote is located in the fallopian tube, not having attached to its walls. Throughout the week it moves toward the uterus. The embryo at this time is powered by its own energy reserves and protein compounds produced by glands in the fallopian tubes.

Once in the uterus, the embryo gradually sinks into the uterine endometrium wall. The process of implantation takes place. Under favorable conditions, by the end of week 3, the fetus will have gained a firm foothold in the uterine wall, and a multi-faceted relationship is established between the fetus and the mother’s body. After implantation in the uterus, the pace of growth and development of the embryo significantly accelerates.

The future baby by this time looks like a small hollow ball with a diameter of 0.1 – 0.2 mm, consisting of 250 cells, which contain important genetic information.

The embryo at this stage is located in a microscopic pouch filled with amniotic fluid. It is still deriving nutrients from the yellow pouch.

What happens to the Mom during the third week of pregnancy

Mom at the 3rd week of pregnancyDo not expect any clear signs of pregnancy at such an early stage – the body has not undergone any major changes up till this point. In most cases, the Mom does not even know about her condition until the fifth or sixth week of pregnancy.

Many mothers may have symptoms of PMS in 3rd week of pregnancy and may experience the following sensations:

  • slight swelling of the breasts;
  • fatigue;
  • drowsiness ;
  • dizziness;
  • frequent urination;
  • increased appetite;
  • nagging abdominal pain.

Diagnosis of pregnancy at an early stage

It is difficult to diagnose a pregnancy at the early stages. However, future moms, who are planning a pregnancy, may determine the onset of ovulation and fertilization using several methods.

Basal temperature

Basal body temperature in early pregnancy

The onset of ovulation, pregnancy, and the presence of hormonal disruptions, can all  be determined by a measurement of basal body temperature. Also, basal temperature indicators are needed to identify possible deviations in the development of the future baby.

Measure the temperature systematically under stable conditions. This is done in the morning after waking up. Keep in mind that your night’s sleep should be at least six hours. The most accurate results can be achieved when the temperature is measured rectally.  If desired, you can also do so orally and vaginally. Both mercury and electronic thermometers are suitable measuring purposes. You must measure the temperature every day at the same time.

The accuracy of the results depends on many external factors – stress, illness, alcohol, travel and medications. The normal temperature range during pregnancy is considered to be from 37,1 to 37,3 ° C.  Temperature below normal signify a threat of miscarriage and unstable production of hormones – be sure to inform your doctor.

Basal temperature can also drop when there is missed abortion. An increase in temperature may indicate an ongoing inflammatory or infectious process

Pregnancy tests

The results of a home pregnancy test performed at this cheap mlb jerseys term can not be considered objective. The tests are able to detect pregnancy only after a delay in the monthly cycle, but during this term, the level of human chorionic gonadotropin is not high enough to show the telltale second line.


HCG in early pregnancy

In the third obstetric week, you can begin monitoring your HCG levels and comparing them to the normal level. The normal presumed level of HCG for a typical person is 2-5 units. From the first days of implantation, it doubles daily. The level of the hormone sufficient to be detected on a pregnancy test will only be reached by the end of the third obstetric week.

HCG helps the formation of active cells responsible for the production of progesterone. This hormone is very important for the first trimester of pregnancy – it promotes relaxation of the uterus. And thanks to progesterone, an expectant mother  has growing mammary gland

Analyses, examinations and ultrasound in the 3rd week of pregnancy

Photo fetal ultrasound on the 3rd week of pregnancy

One of the mandatory procedures when planning a pregnancy is a blood test to check for immunity to rubella. A rubella infection in an expectant mother during pregnancy entails a huge risk of transfer it to the child. In a child “congenital rubella” is manifested in heart defects, deafness, mental retardation and blindness.

A complete blood workup can characterize the state of health of the unborn child.

At this period it’s already possible to have an ultrasound – its results can determine whether or not there is a pregnancy. Above you can see photos of a fetal ultrasound at 3 weeks of pregnancy.

Possible abnormalities and problems

Possible deviations from the norm and problems on the 3rd week of pregnancy You should always consult a doctor in case of unpleasant sensations or discomfort in the lower abdomen. A visit to the doctor will help to rule out the possibility of uterine hypertonus.

Tugging pain in the abdomen can signal that the future mom should avoid physical exertion.

 Some moms can notice minor discharge in the 3rd week of pregnancy – do not worry, it will not cause any harm to mom, or the fetus. Brown discharge or bleeding is caused by the attachment of the ovum to the endometrium. Because of this discharge, many moms may mistake the pregnancy for onset of menstruation. 

Problems with the implantation of the ovum may arise if the mommy has previously experienced chronic gynecological diseases. For example, the endometrium may reject the already implanted embryo. Inflammation of the pelvic organs can trigger the appearance of adhesions in the fallopian tubes. Because of this, a fertilized egg is not able to descend into the uterine cavity, which leads to an ectopic pregnancy.

Symptoms of an ectopic pregnancy include abdominal pain and spotting. The most accurate way to diagnose an ectopic pregnancy is by ultrasound. An ectopic pregnancy can be removed with laparoscopic surgery, while maintaining the woman’s fertility.

When planning a pregnancy such negative consequences can be avoided, by treating  the chronic diseases in advance.

Mom’s nutrition and exercises in the 3rd week

With the onset of pregnancy, the female body is completely restructured. To easily undergo these changes, the future mom, must also make some adjustments in her daily life.

Changes in nutrition

What mothers eat at the 3rd week of pregnancy

By the end of the third week, the first signs of toxicity may manifest themselves. Due to high levels of estrogen, the sense of smell is augmented for many women. Morning nausea and vomiting may become a frequent occurrence. You can avoid nausea by getting used to having a proper breakfast. Thus, the first meal of the day should be nutritious, but easy to eat, and is best consumed  without getting out of bed.

Being pregnant does not necessarily mean that you should immediately begin to eat for two. 2200 calories a day is a sufficient amount to maintain the wellbeing of women in this interesting condition. It is better to eat small portions, more frequently than usual. It is preferable to increase the consumption of cottage cheese, fish, broccoli, wheat bread apples and other fresh fruits and vegetables. It is necessary to fill your diet with foods rich in folic acid.

 It is also extremely important not to forget about the consumption of liquids. The norm is 1.5-2 liters of water.  It is desirable to limit the amount of consumed coffee and tea. You need to completely give up alcohol and nicotine. 

Exercises for pregnant women

Exercises in the third week of pregnancyFuture moms have to perform certain exercises in order to ensure the positive reactions of their bodies to the transformation taking place within them, to train the muscles of the back and abdomen for the increasing burden, and to improve the respiratory and cardiovascular systems.

The result of these exercises is optimized joint mobility, learning to relax and stretch the abdominal muscles with different types of breathing. The duration should not exceed 45 minutes.

It is preferable to avoid exercise-related jerking, sharp movements, pushing and falling. Exercises, which are performed from a supine position, may be performed only if the pregnancy is proceeding normally.

Additioinal information about exercising in the 1 trimester…

Sexual activity in the 3rd week

If there is no threat of termination of the pregnancy, a doctor may approve of sexual intercourse. Often, many women are not even aware of the occurrence of pregnancy by this time and continue conducting their intimate relations in a familiar rhythm. If gestation is not accompanied by any pathology, then sex can only be of benefit.

Recommendations for mom

The 3rd week of pregnancy is one of its most important periods. At this stage, the formation of the internal organs of the fetus takes place, and so it is imperative during these seven days to protect yourself from physical overload, stresses and fatigue.

It is imperative at this time to avoid taking antibiotics and potent drugs. In fact, the ingestion of any medicines, starting with this period, has an impact on fetal development, which is why their particularities and necessity should be discussed with your gynecologist.

Any negative factors can subject the newly formed life to serious risks.

Video about the 3rd week of pregnancy

Having watched this video guide on the 3rd week of pregnancy, you will get answers to many questions related to the mom’s condition – why the calculation begins two weeks earlier, and not from the moment of fertilization, what changes occur in the body and which methods can diagnose a pregnancy.

Waiting for a baby – a very exciting process! While carrying a baby, many moms are very impressionable and restless. An inquiry to all future mothers – what else would you like to learn about the 3rd week of pregnancy? Perhaps, experienced mothers willing to share their knowledge – how was your first trimester? Your recommendations and comments can be left by using the special form.

Check Also

11 week of pregnancy

The 11th week of pregnancy: what happens to the baby and Mom

Page Contents:1 The size and development of the fetus at 11 weeks of gestation2 What …

Leave a Reply

Your email address will not be published. Required fields are marked *

4 × 2 =