There's now an amniotic sac surrounding your embryo – it contains amniotic fluid and will cushion your baby as they grow. Spaces form within this layer for your blood to flow into so that you'll be able to provide nutrients and oxygen to your growing baby. Your embryo's outer cells are tunneling into the lining of your uterus. That's why saunas, steam baths, and hot tubs aren't recommended during pregnancy. High temperatures, especially early in pregnancy, have been associated with increased risk of neural tube defects. This is the time when your baby will be most vulnerable to anything that might interfere with development, so be sure to steer clear of alcohol, smoking, drugs, and unsafe chemicals.Īlso, watch out for overheating. Your little embryo consists of two layers called the hypoblast and the epiblast, from which all of the organs will begin to develop over the next six weeks. (Once your amniotic sac forms, 10 to 12 days after fertilization, your baby becomes an official embryo.) Over the next six weeks, your baby's nervous system, connective tissue, and organs will start to develop.Ĭells are multiplying rapidly and taking on different functions. Your baby-to-be will soon transform from a ball of cells called a blastocyst to an embryo the size of a poppy seed. You're just as likely to go into labor any day during the two weeks before or after. Keep in mind that a due date is just a guess – only 1 out of 20 women actually delivers on her due date. Our Due Date Calculator can determine your due date based on the date of your last menstrual period or the date of conception. If you get a negative pregnancy test but your period hasn't come, wait a few days and test again. For the most accurate results, wait until a few day after you miss your period before you take a pregnancy test, use your first morning pee so hCG levels are more concentrated, and follow the directions on your test carefully. If you haven't already, test now to confirm you're pregnant.
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