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5 Weeks Pregnant

Your Pregnancy Week by Week

*Counting from the first day of your last menstrual period

Your Baby at 5 Weeks

Size: 0.13 inches (3.3 mm)
Weight: less than 1 gram

At about the size of a sesame seed, your tiny baby doesn't look much like a baby yet, but is developing at a very rapid pace! Your little one is made up three layers - the ectoderm, the mesoderm, and the endoderm.

The neural tube, which will develop into your baby's brain, spinal cord, nerves, and backbone, is developing in the top layer, called the ectoderm. This layer will also become skin, hair, nails, glands, and tooth enamel.

The central nervous system, muscles, bones and even the heart will begin to form around this time. Early skeletal development may also begin at or around pregnancy week 5.

The heart and circulatory system begin to form in the middle layer (mesoderm). During this week, the heart will begin to divide into separate chambers and start pumping blood. The circulatory system is the first organ system to function! This layer will also become muscle, cartilage, bone, reproductive organs, kidneys and other tissues.

The third layer (endoderm) will develop the lungs, intestines, urinary system, thyroid, liver and pancreas.

Mom at 5 Weeks Pregnant

Mom at 5 weeks pregnant - Pregnancy Week By Week Your period is late and if you haven't already, it's time to confirm your pregnancy with a home pregnancy test. When those 2 beautiful lines show up (or plus sign or the words "Pregnant!") be sure to notify your doctor to schedule your first prenatal appointment. You likely won't see your doctor or health practitioner until you are 8 to 10 weeks pregnant (unless you have a special circumstance).

Some women definitely feel pregnant by week 5, others may take longer to notice the uncomfortable first trimester pregnancy symptoms. You may begin to feel nauseous around week 5 or 6, perhaps you've even experienced a few bouts of vomiting. Other early signs of pregnancy you may notice are a need to urinate more often, swollen or sore breasts, bloating and increased fatigue.

Pregnancy symptoms vary in intensity from woman to woman and remember they also vary from pregnancy to pregnancy in the same woman. So how you felt the last time may not be what you feel this time around. Every pregnancy is a unique experience.

Relax, rest when you need it, drink plenty of water and enjoy your pregnancy!

Common Symptoms: bloating, nausea, swollen or tender breasts, frequent urination, fatigue/exhaustion

Weight Gain:
You likely haven't gained much by this point in your pregnancy, especially if you are suffering with morning sickness. Your total weight gain, if any, is likely about a pound. By the end of the first trimester, you will have gained about 5 to 7 pounds.

Get first-morning urine. Finally, the week has come when Great Aunt Flow should be arriving for her monthly visit. If she hasn't yet, and you just can't stand the anticipation there are some early- result pregnancy tests you can try that will detect pregnancy hormones as soon as the first day of your missed period. Just remember to use your first urine of the morning for testing. If you must, pee into a disposable cup and dip the stick into it for proper testing. First morning urine is more concentrated and tests are better able to detect even small amounts of hormones more effectively.

Videos - 5 Weeks Pregnant

Your Pregnancy Week by Week Guide: Select a Week

** Note: Every baby develops at a different rate. The numbers provided are averages based on a "typical" pregnancy. Your baby's size and weight may vary significantly. Your healthcare provider is the best person to interpret information on your baby's size, weight, health and development during your ultrasounds and pregnancy.

Community Comments (45)

Comment from LillieBelle88 » Posted Feb. 17, 2015 1:55am
5+2 with my first - nervous ain't the word!!

Comment from jessiemelen » Posted Sep. 18, 2014 9:01am
According to date of last menstrual, I was 7w2d on Tuesday but after my sono I was told that I was only 5w2d?? Left there really confused and still am but out of my control I guess. Did get to see the heartbeat though, so regardless, we're happy! Feeling extremely exhausted in the evenings as well as nauseous.

Comment from lezdinecunn » Posted Sep. 8, 2014 4:28pm
This is the third pregnancy. First one - baby aborted itself between week 5 + 6. Second one - we found out at the 20 week scan that there were a few concerns. Soon thereafter it was confirmed that our son had Edwards Syndrome. On the 1st of July our son passed away in my tummy. Hopefully this time it's third time lucky...

Comment from waterbuggi » Posted Jul. 30, 2014 6:46am
Today is week 5 for my second pregnancy. I feel a little bloated and a tiny bit tired but nothing like my first where I was sick the entire first trimester...at least not yet... :)

Comment from Ilove40 » Posted Jul. 9, 2014 7:17am
5 weeks today with baby #4! Feeling EVERYTHING this time around!

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