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5 Weeks Pregnant

5 Weeks Pregnancy isn’t much different from pregnancy week 4. During you are 5 weeks pregnant, your baby is still just over a millimeter long. You might say that your baby is about the size of a small grain of rice! However your baby is growing in many other ways. Vital organs continue to develop through this week. You may notice some pregnancy-related discomforts already. Many women report sore breasts, fatigue, and frequent urination starting in the early weeks. You may also have nausea, though it’s more likely to show up in the coming weeks.

Morning sickness may start by pregnancy week 5 but probably won’t set in for a few more weeks. Morning sickness is actually a misnomer. The nausea that is associated with pregnancy can come at any time of the day, morning or night.

Some women are plagued with morning sickness during their entire pregnancies, though most morning sickness gets better after the first trimester. The good news is there are many things you can do to help alleviate morning sickness as you follow your pregnancy week by week. Try keeping some crackers and seltzer water close by the bed and snack on some before you get up in the morning. Morning sickness is often worse on an empty stomach. Other women find sipping some ginger tea or lemon water helps relieve nausea.

You’ll also want to continue or start an exercise routine. Exercise helps you develop the strength and endurance you’ll need to manage the extra weight you’ll be carrying. It may help prevent some of the aches and pains of pregnancy, and many women find that it’s a great stress-reducer. Exercise can also help you get ready for the physical rigors of labor.

Deep in your uterus your embryo is growing at a furious pace. At this point, he’s about the size of a sesame seed, and he looks more like a tiny tadpole than a human. He’s now made up of three layers — the ectoderm, the mesoderm, and the endoderm — which will later form all of his organs and tissues.

The neural tube — from which your baby’s brain, spinal cord, nerves, and backbone will sprout — is starting to develop in the top layer, called the ectoderm. This layer will also give rise to his skin, hair, nails, mammary and sweat glands, and tooth enamel.

His heart and circulatory system begin to form in the middle layer, or mesoderm. (This week, in fact, his tiny heart begins to divide into chambers and beat and pump blood.) The mesoderm will also form your baby’s muscles, cartilage, bone, and subcutaneous (under skin) tissue.

The third layer, or endoderm, will house his lungs, intestines, and rudimentary urinary system, as well as his thyroid, liver, and pancreas. In the meantime, the primitive placenta and umbilical cord, which deliver nourishment and oxygen to your baby, are already on the job.

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