Pregnancy, week by week.

Size of a poppy seed

Mom: You may notice a missed period. A home test will likely show positive now.

Baby: The embryo is the size of a poppy seed. The neural tube is forming.

Size of a sesame seed

Mom: Early pregnancy hormones kick in. You may feel tired, with mild cramps.

Baby: The heart begins to form. The brain and spinal cord are developing fast.

Size of a sweet pea

Mom: Morning sickness can start. Sore breasts are common.

Baby: Tiny arm and leg buds appear. The heart starts to beat at around 110 bpm.

Size of a blueberry(1g)

Mom: Frequent urination begins. Food aversions can appear suddenly.

Baby: The face is taking shape. Eyes, nostrils, and the inner ear are forming.

Size of a raspberry(1g)

Mom: Nausea may peak. You may feel emotional swings.

Baby: Fingers and toes start to form. The heart now beats around 150 bpm.

Size of a cherry(2g)

Mom: Your uterus is doubling in size. Bloating is common.

Baby: All essential body parts are forming. The tail is gone and the embryo is now a fetus.

Size of a strawberry(4g)

Mom: You may have visible blue veins on your chest as blood volume rises.

Baby: Vital organs are functional. Tiny nails appear on fingers.

Size of a lime(7g)

Mom: Energy may start returning. Nausea begins easing for many.

Baby: External genitals start to differentiate. Baby can hiccup.

Size of a plum(14g)

Mom: End of first trimester soon. Risk of miscarriage drops sharply.

Baby: Reflexes develop. Baby can move fingers and curl toes.

Size of a peach(23g)

Mom: Skin can break out due to hormones. Cravings may start.

Baby: Vocal cords are forming. Baby can suck a thumb.

Size of a lemon(43g)

Mom: Trimester two begins. Energy returns for many.

Baby: Facial muscles work. Baby can frown, squint, and wince.

Size of a orange(70g)

Mom: Your bump may start showing. Round ligament pain can begin.

Baby: Baby can sense light through closed eyelids.

Size of a avocado(100g)

Mom: You might feel quickening (first flutters).

Baby: Baby can hear. Hair is forming on the head.

Size of a turnip(140g)

Mom: Center of gravity shifts. Watch your balance.

Baby: Baby starts storing fat. Sweat glands develop.

Size of a bell pepper(190g)

Mom: Heartburn may appear. Sleeping on your side is recommended.

Baby: Baby is yawning and stretching.

Size of a mango(240g)

Mom: You may feel light-headed when standing up too quickly.

Baby: Vernix (waxy coating) covers baby to protect skin.

Size of a banana(300g)

Mom: Halfway! Anatomy scan often happens around now.

Baby: Baby is developing their digestive system.

Size of a carrot(360g)

Mom: You may feel kicks regularly now.

Baby: Baby tastes what mom eats through amniotic fluid.

Size of a papaya(430g)

Mom: Stretch marks may appear. Stay hydrated and moisturize.

Baby: Eyebrows and lips are well-defined.

Size of a large mango(500g)

Mom: Backaches are common. Pelvic floor exercises help.

Baby: Baby has rapid eye movement (REM sleep).

Size of a ear of corn(600g)

Mom: Glucose test usually scheduled. Watch for swelling in feet.

Baby: Lungs develop branches and surfactant.

Size of a cauliflower(660g)

Mom: Hair may feel thicker. Sciatica can start.

Baby: Baby responds to your voice.

Size of a zucchini(760g)

Mom: You may feel Braxton Hicks (practice contractions).

Baby: Eyes start opening. Baby can blink.

Size of a head of lettuce(875g)

Mom: Trimester three begins. Hospital tour planning starts.

Baby: Brain activity becomes more complex.

Size of a eggplant(1000g)

Mom: Doctor visits become more frequent.

Baby: Baby dreams, with REM sleep cycles.

Size of a butternut squash(1150g)

Mom: Restless legs syndrome can appear.

Baby: Bones harden. Muscles strengthen.

Size of a cabbage(1320g)

Mom: You may have trouble sleeping. Pillow support helps.

Baby: Baby gains weight quickly now.

Size of a coconut(1500g)

Mom: Colostrum may start leaking from breasts.

Baby: All five senses are functioning.

Size of a jicama(1700g)

Mom: Baby is taking up more room. Eat smaller, frequent meals.

Baby: Baby practices breathing motions.

Size of a pineapple(1900g)

Mom: Pelvic pressure increases. Posture matters.

Baby: Bones are hardening, except the skull.

Size of a cantaloupe(2150g)

Mom: Hospital bag should be packed.

Baby: Vernix and lanugo (fine hair) start to shed.

Size of a honeydew melon(2380g)

Mom: You may waddle. The baby drops lower in the pelvis.

Baby: Kidneys are fully developed.

Size of a bunch of bananas(2620g)

Mom: Doctor checks for position. Group B strep test is done.

Baby: Most babies turn head-down by now.

Size of a winter melon(2860g)

Mom: Baby is considered early term. Birth could happen anytime.

Baby: Baby is plump and ready for life outside.

Size of a pumpkin (small)(3080g)

Mom: Watch for signs of labor. Stay close to home.

Baby: Baby continues to gain weight.

Size of a mini watermelon(3290g)

Mom: Full-term. Pack hospital documents in the front pocket.

Baby: Lungs are fully mature.

Size of a small pumpkin(3460g)

Mom: Due date! Most babies arrive within 1-2 weeks of this date.

Baby: Ready when ready. Average weight: 7.5 lb (3.4 kg).