A Week-by-Week Fetus-Size Guide Based on Objects You Actually Know

Wait — what happened to weeks one, two, and three of the pregnancy? Trick question! You're not actually pregnant during weeks one and two (those are freebies, since we start counting on the first day of your last period). At week three, conception probably just occurred and the fertilized egg is implanting

By week four, your baby, or more accurately your little collection of cells, is 0.07 inches, or about the size of a grain of sand. So cute!

At just 0.13 inches your fetus resembles the size of the sesame seeds sitting a top the inevitable bagels or burgers you will have while pregnant.

Make a wish! This week the fetus has doubled to 0.51 inches, about the length of a human eyelash.

At 0.63 inches your baby's length is about the same as a gummy bear's height. Don't you just want to squeeze them!

Anytime you press "enter" note that your baby's length (0.90 inches) is about the same size as that key.

You won't have any chances to pop open some wine this week, but if you did, your baby would be around the size as the cork, about 1.61 inches.

Each time you apply your lipstick, note that the tube is about the same length as the little one in your womb, 2.91 inches.

Open your wallet, and you'll see a good approximation of how long your baby is: 3.42 inches.

Stay hydrated, and remember that this week, your baby is as long as a tall water bottle at 10.08 inches.

There won't be much time to read once you welcome your baby, who is 10.51 inches long.

That bottle of wine you're wistfully eyeing? It's about as tall as your baby is long, 11.81 inches.

If you're adding waves to your hair this week (congrats for still trying!) — you're holding a wand about the size of your baby, 14.02 inches.

Mmmm . . . pizza. If you're ordering an extra large this week (which, you should), know the box is about the same length as your little one, 16.69 inches.

Your baby's getting long — 17.70 inches, or the same length as a keyboard.

A standard throw pillow is approximately the same size as your almost-here baby, 18.19 inches. Practice cuddling on the couch!

Your baby is 19.13 inches long this week — just like a windshield-wiper blade.

Your baby is as tall as a Herschel backpack, measuring 19.61 inches. You'll be carrying more than that soon.