Week Four of Your Pregnancy


Week 4 Info


This week marks the beginning of the embryonic period.  From now until 10 weeks, all of your baby's organs will begin to develop and function.  This is the time when the fetus is most vulnerable to any exposures that might interfere with it's development.  Be most aware of any medications, alcohol or chemicals that you and your baby might be exposed to.

You baby is only the size of a poppy seed and consists of only two layers that will eventually form all of its organs and body parts.  The placenta is also only two layers and is burrowing into the lining of the uterus creating spaces where your blood will flow and provide nutrients and oxygen by the end of this week.  Your baby is exposed to anything you take into your body through these spaces so make sure it's good for both of you.

You might be able to find out that you are pregnant this week.  The most accurate time for a urine pregnancy test, however, is when you are one week late for your period so if your test is negative at this time wait one more week and then repeat it if you still haven't gotten your period.  If you aren't pregnant and you've been trying to conceive for more than a year (or 6 months if your are over 35) talk to your health care provider about a workup for you and your partner to spot possible fertility problems.

If your test is positive, give your practitioner a call to set up your first prenatal visit (they may not want to see you until you are about 8 weeks along but many practitioners book ahead), check whether any medications that you are taking are safe to continue, and to report any unusual symptoms.  Check your vitamins and make sure you are getting at least 800 mcg of folic acid.  Prescription prenatal vitamins contain 1000 mcg of folic acid so you may want to discuss obtaining a prescription from your provider.  Continue light to moderate exercise and plenty of rest.

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