My pregnancy: 8 weeks

How my baby's growing:

New this week: Webbed fingers and toes are poking out from my baby's hands and feet, his eyelids practically 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 one another, forming primitive neural pathways. I may be daydreaming about my baby as one sex or the other, but the external genitals still haven't developed enough to reveal whether I'm having a boy or a girl. Either way, my baby — about the size of a kidney bean — is constantly moving and shifting, though you still can't feel it.

See what's going on in my uterus this week.

Note: Every baby develops a little differently — even in the womb. Our information is designed to give you a general idea of your baby's development.

How my life's changing:

I may notice that your bra is getting more snug. Soon I'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. My breasts may continue to grow throughout pregnancy. Don't be surprised if I go up a cup size or two, especially if it's my first baby. Keep this in mind, and allow for room to grow when investing in a new bra.

Feeling fatigued? Hormonal changes — in particular, a dramatic rise in progesterone — may be contributing to my sluggishness. Nausea and vomiting can certainly cost me energy, too. And I may be having trouble getting a good night's sleep at this point, especially if I'm uncomfortable or find I need to get up to pee.

Walking to beat fatigue "Taking a short 15- to 20-minute walk helped me cope with the overwhelming fatigue that hit me in the first trimester. It was the only way I made it through a day at work without a nap!" —Gabriela