5 Weeks Pregnant 8

The vast majority of pregnancy tests are positive by the end of week 5, though some women end up having to confirm by blood test or ultrasound. If you have a scan this early, you won’t see much but a small circle (the yolk mentioned in week 4). That yolk supporting your baby is now 90 percent complete, by the way.5 weeks pregnant ultrasound

What does my baby look like at 5 weeks pregnant?

Well, it doesn’t look like a baby yet–that is if you could even really see it. Your baby is about 1.5 to 2.5 millimeters in length or roughly the size of a grain of rice. During this week, the ball of dividing cells that are your baby separate into three layers: the ectoderm, mesoderm, and endoderm.

5 weeks pregnant baby

Yep, doesn’t really look like a baby

The outer layer, or ectoderm, has begun to form a neural tube, sometimes referred to as a “fetal pole.” The spinal cord, brain, hair, skin, nails, tooth enamel nerves and more come from this layer.

The middle layer, or mesoderm, forms into muscle, bone, cartilage and the heart. Amazingly, your baby’s heart should be complete, and begin to beat sometime between 5 weeks pregnant and 6. You won’t be able to hear it on a doppler for some time, but it may be visible by ultrasound as a faint flickering.

Finally, the third and inner layer forms organs such as the lungs and liver. Though keep in mind most of the above are only beginning to form and won’t be complete for some time.  Yes, 5 weeks pregnant is a busy time for baby.

How are things for momma at 5 weeks pregnant?

At 5 weeks, you may begin experiencing pregnancy symptoms. You may feel exhausted. Breast tenderness might become and issue. You should invest in comfortable bras— remember to leave a little growing room. Some women also experience more cramping or even a feeling of fullness in the uterus during week five. The surge of hormones this week can cause symptoms similar to those of your menstrual cycle. This can commonly include headache. Avoid aspirin if you do opt for pain relief. Aspirin can be harmful to your baby. Consult your health care provider before taking any over the counter medication, including herbal or home remedies. You can read a full list of some of the earliest signs/symptoms of pregnancy here.

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8 thoughts on “5 Weeks Pregnant

  • Aswathy

    I am 5 weeks and 5 days according to the LMP. I don’t know the correct ovulation date or the implantation date. I had a trans vaginal ultra sound today and the doctor was not able to see a yolk sack or a fetal pole. She could only see the gestational sack. So she asked for a beta hcg test and it was 21165. I am asked to go for another blood test on day after tomorrow to see if the levels are rising. Is it already time to see the yolk sack and fetal pole? Is my hcg levels good? Please advice.

    • Life with Gremlins admin

      Your hCG is normal for almost 6 weeks, yes. With a vaginal ultrasound, you’re sort of right on that cusp where the fetal pole and yolk should be visible. The range is generally accepted as between 5.5-6.5 weeks, so it is entirely possible that your pregnancy is still viable. Fingers crossed you get good news.

  • Marilyn

    I have a question. Im currently 5 weeks and 4 days pregnant today which is August 12. I took a clearblue weeks estimator on Tuesday August 9th and it came up 2-3 weeks pregnant and then I took another today which is Friday August 12 and it said 1-2 weeks pregnant. Should I be worried? Or could it be the dilation of my urine?

    • unwirklich admin

      It is entirely possible that it’s just variance in the sample. I wouldn’t worry at this point, no, if you aren’t having any spotting or anything.

      • Marilyn

        Thank you for replying back to me, but is it possible that your hcg level can go down drastically in 3 days to show that type of result?

        • unwirklich admin

          In the case of a miscarriage, yes, it could, but that’s actually not that drastic. The levels for hCG on those test are as follows:

          1-2 weeks = 10miu to 157miu

          2-3 weeks = 158miu to 2000miu

          3+ weeks = >2000miu

          hCH should double every 48 hours at minimum and many women have a level above 10 before their missed period even. Keep in mind that when the test says “1-2 weeks” it means 3-4 weeks, because the test is counting from ovulation, but pregnancy is traditionally counted from your last period. At 5w4d your test may have been barely over the 3-4 week barrier (being truly 5-6 weeks), making enough variance sample wise to drop down entirely possible.

          I will also throw in some opinion here, I used those tests while TTC as well, and suggest you give their accuracy a Google. I had two losses before my rainbow baby, and man was I compulsively testing with baby 3 (who is a beautiful 18 month old now btw). The week estimator went up and down for me with her too, and it made my heart drop every time. Lots, and I mean lots, of women have gotten freaked out thinking they were miscarrying because of those stupid tests, went to the doctor, and their hCG was well above range for what the test said.

          • Marilyn

            Thank you so much for explaining everything to me. That makes me feel a little better. So just to clarify, its possible that the 1-2 week and 2-3 weeks were on the borderline of each other and that’s why that particular result came up correct? Do you recommend that i test next week and see what the result says? and if it’s still 1-2 weeks then that would be a problem right?

          • unwirklich admin

            I would recommend you not test anymore actually. It’s only going to stress you out. If your hCG levels really are falling, there’s nothing that can be done to stop the loss. If there’s no bleeding, I’d try not to worry, and just continue with prenatal care checkups as you normally would. I can say that in general, with losses this early it happens fast, you would know within the week.