Fetal Development – Week 4

Fetal Development – Week 4

Fetal Development – Week 4

Maybe you just missed your period, took a home pregnancy test and it was positive.  You are waiting for your first doctor’s appointment or your first appointment at ACPC Women’s Clinic.  You’re stressed.  You’re wondering what is going on inside your body.  You’re wondering if everything is okay. You might be scared, excited, shocked…or maybe a combination of all of the above.  It’s okay.  What you are feeling is completely normal.

Call or text us today to schedule your ultrasound.

You might be undecided about what you want to do.  You may be considering the abortion pill or a medical abortion.  You may be considering adoption.  You may be completely confused about what you want because this is all just happening way. too. fast.

The good news is you don’t have to make a decision right now. The best thing to do is to get the facts – all the facts – so that you can make an educated decision that you are comfortable living with for the rest of your life.

The most important thing to do right now is to ask more questions.  One of the ways you can get your questions answered is by finding out what is going on in your body right now.  We want you to be educated about the scientific and medical facts surrounding your pregnancy so that you can make a well thought out, informed decision.  That’s why we created this series.

WE’RE HERE TO HELP – Call or text 719.544.9312

Week 4:

The embryo is very tiny at this stage, and cannot be seen easily on an ultrasound by the untrained eye.  However, the heart can be seen beating by ultrasound, and in fact has been beating since week 3.  The beginning of the spinal cord, muscles, and nerves develop.  Arms, legs, eyes and ears start to form.  The amniotic sac and placenta are in place and providing nourishment to the embryo.

The most accurate way to determine how far along you are is to have an ultrasound.  During an ultrasound at ACPC Women’s Clinic, one of our nurses will take measurements to determine the gestational age of the baby.  The first and earliest ultrasound is usually the most accurate of ultrasounds throughout your pregnancy in determining gestational age. 

Week 2

Week 4

Week 6

Week 10

Week 14

Week 18

Week 22

Week 26

Week 30

Week 40


Sources: A Child Is Born by Lennart Nilsson; Nine Month Miracle, A.D.A.M. Software, Inc; Introduction to Child Development, 6th ed., by John Dworetzky; More information about how fetal photographs were taken.