Week 20

Congratulations! This week marks the half way point of your pregnancy. It has been 18 weeks since the date of conception and your baby’s crown-to-rump length is 5.6 to 6.4 inches. The fetus weighs about 9 ounces and your belly definitely has an obvious bulge. Your waistline has expanded and is no longer visible. Your uterus has now moved up enough that it is pushing your abdomen outwards. The top of your uterus is even with or just below your navel.

Sex organs are showing clearly on this girl

For the remainder of your pregnancy, the growing uterus puts pressure on your lungs, stomach and kidneys. This will make you feel short of breath, the need to urinate more frequently and can cause indigestion. The added pressure on your abdomen can also cause your bellybutton to protrude and cause an `outy` instead of an `inny`. Many pregnant women begin to notice stretch marks around this time as well. Your abdominal muscles are being stretched and pushed apart as your baby grows inside of you.

Your baby’s skin begins to thicken this week and will develop four layers. Your baby’s sebaceous glands secrete a waxy substance called vernix caseosa. Your baby will be born with this wax and it will look like paste. The vernix caseosa is crucial because it protects the fetus’ fragile skin from the continuous immersion in amniotic fluid. Lanugo hairs secure the vernix caseosa in place and it is thick around the eyebrows. Scalp hair and toenails are beginning to form at this point. Hair can also be seen on the upper lip and eyebrows.

Around twenty weeks, most doctors will order a routine ultrasound to check the baby’s development. Measurements will be taken and the sonogram technician will check to make sure there are no defects or abnormalities. Your ultrasound technician can also see how long your cervix is and can tell you approximately how much your baby weighs at this time. Most expectant women also find out the sex of their baby during this time! If your sonographer does not offer pictures, ask them for a copy of the photos.

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1 Comment
  1. stacey3 18 May 2016

    I am 21 weeks tomorrow! I felt the baby move on the outside for the first time on May 12th (the first day of my 20th week!) I am so excited! I have tried a couple times to let my 8 yr old feel the movements, but she was not able to. She gets distracted easily and doesn't know what she is feeling for. You really have to pay attention since the movements are so fast and small right now. It is hard to get baby to move just by pushing on my belly a little. When farther along, if you poke a little, usually baby moves away or pushes back. Also, you can see the movements then. If I eat something, baby starts moving within 20 minutes. Feeling baby move is my favorite part of being pregnant! I love being pregnant. I am so sad that this will be my last baby. I go in for my ultrasound tomorrow! I love seeing baby! My husband got hurt at work last week. He got hit in the groin by a board he was cutting on a table saw. It shot back like a rocket at him. He tried to ice it and tough it out (crazy man) he woke up the next day horrible bruised and swollen. We went to the doctor, they did surgery and had to remove one of his testicles. It was so horribly damaged. The doctor took a picture of the thing and showed it to me. It was bad. I don't know how he lasted over 24 hours before the surgery. He has been off work now for almost 2 weeks, and will be off another week. He is going stir crazy and driving me insane! I got him out of the house today with my dad. Hopefully he stays gone till bed time because I am enjoying the peace and quiet! I also really am enjoying my alone time with my 2 yr old. It is hard to stay on a schedule with him around. This is the first day she is taking her nap at the right time since his injury last week!

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