How your baby’s growing
New this week: Your baby’s hands and feet are developing webbed fingers and toes, his eyelids almost cover his eyes, breathing tubes extend from his throat to the branches of his developing lungs, and his “tail” is just about gone. In his brain, nerve cells are branching out to connect with each another, forming primitive neural pathways. You may be daydreaming about having a boy or a girl, but the external genitals haven’t developed enough to reveal your baby’s sex. Either way, your baby – about the size of a kidney bean – is constantly moving and shifting, though you still can’t feel it.
See what fraternal twins look like in the womb this week.
How your life’s changing
You may notice that your bra is getting tight. Soon you’ll likely need a larger size with better support. Rising levels of hormones cause breast growth and other tissue changes, all in preparation for lactation. Your breasts may continue to grow throughout pregnancy. Don’t be surprised if you go up a cup size or two, especially if it’s your first baby. Keep this in mind, and allow for room to grow when buying a new bra.
Feeling fatigued? Hormonal changes – in particular, a dramatic rise in progesterone – may be contributing to your sluggishness. Nausea and vomiting can certainly cost you energy, too. And you may be having trouble getting a good night’s sleep, especially if you’re uncomfortable or find you need to get up to pee.
Learn about: First-trimester prenatal tests
Your doctor or midwife will offer you a range of tests during your pregnancy that can help determine whether your baby has Down syndrome and other conditions. Some are relatively simple blood tests (meaning you’ll need to give a sample of your blood), while others involve more invasive procedures. All are optional. Before you agree to any test, ask your healthcare provider to explain what it is, how it’s done, and what the results will tell you. Many prenatal tests are for screening rather than diagnostic purposes. Screening tests give you a sense of your risk for certain conditions. But only a diagnostic test can tell you for sure whether your baby has a problem.