13 Weeks Pregnant: Baby Development, Maternal Changes and More

Editor's Note: This article has been recently updated with latest information and research studies.
 

At 13 weeks, your baby should not be addressed as ‘embryo but rather ‘fetus’. During this period, the baby is nearly over with the fetal growth and development milestones. This article provides an overview on the fetal development, maternal changes, signs and symptoms and some interesting facts about 13th week of pregnancy.

At 13th week of pregnancy, the fetus elicits sucking.

Height of the baby: 6.7 cms – comparable to the size of a peach but less than a finger!
Weight of the baby: 23 grams

What Happens to The Baby?

Week 13 Fetus

Trivia: Did you know that a baby girl has over 2 million eggs in the ovaries, and when she is born, it drops to a million only, and by the time she reaches puberty, eggs will only be around 200, 000?

The baby is start rooting in the mother’s womb and has already tiny fingertips. Fats are entirely gone, so bones become prominent. The amniotic fluid that the baby swallows passes out of the body as urine. At 13 weeks of pregnancy, the baby is comparable to the size of a peach! The baby has vocal cords, and the lips and nose are completely formed. The pancreas as well as the gall bladder of the baby is fully developed.

What Happens to Your Body

Congratulations mothers, you are almost in the second trimester! This means that the high-risk period of first trimester of pregnancy is over. If you are unsure of announcing your pregnancy last week, you can do it now. After all, this is a safe mark to proclaim the good news. This can also be the time to make a declaration to your siblings that a cute family member is on the way.

13 Weeks Pregnant

This does not mean however that all your aches are entirely over during the 13th week. Symptoms may not disappear completely but at least, they are not as notorious as the first trimester’s. Morning sickness may be entirely gone, and this will be replaced by food cravings. As an aftermath, your good appetite is back! And because the uterus continuously expands, moms-to-be continues to feel the troubles of heartburn and indigestion.

… So, what happens to your body at 13th week?

  • Disappearing nausea
  • Increasing* appetite
  • Frequent bathroom trips
  • Lessening breast tenderness
  • Increasing* sex drive
  • Visible veins
13 Weeks Pregnant

The Second trimester of pregnancy begins counting after completing the 13th week of pregnancy.

Becoming Healthy and Fit @ 13 Weeks of Pregnancy

Healthy and Fit at 13 Weeks
  • General Guidelines: It is still important that pregnant mothers eat nutritious foods and observe healthy meal planning. Drink plenty of water and avoid alcoholic and soda beverages. Take a rest and sufficient hours of sleep. Maintain physical activity by performing the regular low-intensity exercise. Also, ensures your baby’s health by taking the prescribed prenatal supplements particularly iron and folic acid.
  • Dealing with Stretch Marks: Nearly 90% of pregnant mothers experience stretch marks. These are pinkish streaks found on abdomen as a result of gaining weight. They are hard to clear up, but there are ways to reduce* their appearance.

Read on the following:

  • Apply lotion with Vitamin E and alpha hydroxyl acids.
  • Perform regular exercise.
  • If using over-the-counter creams, notify your physician first. Creams are absorbable and they can be passed on to babies.
  • Diet should be rich in Vitamin C, E and Zinc for healthier skin.
  • Moisturize skin always.
  • Massage skin to increase* blood circulation to the area and promote skin cell renewal.

Additional Info: Is It Safe to Have Sex During Pregnancy?

One of the most universal concerns of couples (especially husbands) is whether they will hurt their baby when having sex during pregnancy.

As mentioned previously, as moms-to-be enter the second trimester, they experienced increased libido or drive to sex. This is due to increased blood flow into the sexual organs including the breasts. Mothers during early pregnancy have lesser urge to sex due to extreme fatigue and other disturbing symptoms of pregnancy. But doctors say that there is no need to worry about sex when you are pregnant. They explained that babies won’t hurt during sexual activity. They are protected by uterine wall, amniotic sac and amniotic fluid which serve as barriers from any external factor. In addition to that, the opening of the uterus is protected with mucus plug. To correct the fallacy, orgasm won’t trigger labor. Although some might experience uterine tightening when reaching the climax — yet, this is still normal.

Nevertheless, doctors advise to avoid lying flat on your back during sex so as not to compress the vena cava. Compression of this part can make you light-headed and decreased* the oxygen supply to the baby. Nevertheless, pregnant mothers who have placenta previa, cervical incompetence and those who are experiencing preterm labor and vaginal bleeding are advised to abstain from sex during this time. Ruptured membranes or when the water is broken is also a contraindication to have sex during pregnancy.

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Author

Expert Author : Peony C Echavez (Consumer Health Digest)

Peony is a registered nurse, and former Director of Nursing services for a large nursing facility. She has written web content for a large health education website, and currently creates content for a number of health practisioners.