- TrimesterFirst Trimester
You're actually not pregnant yet—the clock starts ticking from the first day of your last period.
Week 1You'll ovulate, and if egg meets sperm, you'll be on your way to pregnancy!
Week 2
Your baby is a tiny ball – called a blastocyst – made up of several hundred cells that are multiplying quickly.
Week 3
Your fertilized egg, known as a zygote, is a ball of 32 cells that's about the size of a poppy seed.
Week 4
The ball of cells now resembles a tadpole and is as big as a peppercorn.
Week 5
Your baby's nose, mouth, and ears are beginning to take shape. You may be having morning sickness and spotting.
Week 6
Your baby is now about the size of a small blueberry.
Week 7
Her arm buds, which formed last week, now look like paddles.
Week 7
Your baby is already developing amazingly distinct facial features.
Week 7
As your pregnancy hormones increase, morning sickness may be worsening. Or, you may be ravenous 24/7.
Week 7Baby's developing a permanent set of kidneys.
Week 7Baby's arm and leg joints are now forming.
Week 7Your baby is about the size of a raspberry.
Week 8
His delicate facial features are becoming more refined, with his ears, upper lip, and the teeny tip of his nose all clearly visible.
Week 8
His eyelids will also take shape for the first time this week
Week 8Your baby is constantly moving, though you can't feel it.
Week 8Your doctor may look or listen for the baby's heartbeat with an ultrasound.
Week 8Your baby has graduated from embryo to fetus—and is now about the size of a cherry
Week 9
The digestive tract and reproductive organs are formed
Week 9
Reproductive organs are beginning to form now, along with some other key organs, like the pancreas and gallbladder.
Week 9Your baby is about the size of a kumquat and can stretch his spine.
Week 10
Her eyes and eyelids are more developed and her eyebrows are beginning to grow.
Week 10
Baby has working arm joints, and cartilage and bones are forming.
Week 10
Baby's vital organs are fully developed and they're starting to function.
Week 10Baby's fingernails and hair are starting to appear too.
Week 10You may have aches and pains in your abdomen, as baby's putting a pressure on your organs, veins, muscles and ligaments.
Week 10Your baby is as big as a lime
Week 11
Baby's fingers and toes aren't webbed anymore.
Week 11
Tooth buds, hair follicles and nail beds are forming.
Week 11The fetus will start to inhale and exhale small amounts of amniotic fluid, which helps your baby's lungs to grow and develop.
Week 11Your cravings may run the gamut from cheeseburgers to chalk
Week 11Your baby is almost three inches long now.
Week 12
- TrimesterFirst Trimester
You're actually not pregnant yet—the clock starts ticking from the first day of your last period.
You'll ovulate, and if egg meets sperm, you'll be on your way to pregnancy!
Your baby is a tiny ball – called a blastocyst – made up of several hundred cells that are multiplying quickly.
Your fertilized egg, known as a zygote, is a ball of 32 cells that's about the size of a poppy seed.
The ball of cells now resembles a tadpole and is as big as a peppercorn.
Your baby's nose, mouth, and ears are beginning to take shape. You may be having morning sickness and spotting.
Your baby is now about the size of a small blueberry.
Her arm buds, which formed last week, now look like paddles.
Your baby is already developing amazingly distinct facial features.
As your pregnancy hormones increase, morning sickness may be worsening. Or, you may be ravenous 24/7.
Baby's developing a permanent set of kidneys.
Baby's arm and leg joints are now forming.
Your baby is about the size of a raspberry.
His delicate facial features are becoming more refined, with his ears, upper lip, and the teeny tip of his nose all clearly visible.
His eyelids will also take shape for the first time this week
Your baby is constantly moving, though you can't feel it.
Your doctor may look or listen for the baby's heartbeat with an ultrasound.
Your baby has graduated from embryo to fetus—and is now about the size of a cherry
The digestive tract and reproductive organs are formed
Reproductive organs are beginning to form now, along with some other key organs, like the pancreas and gallbladder.
Your baby is about the size of a kumquat and can stretch his spine.
Her eyes and eyelids are more developed and her eyebrows are beginning to grow.
Baby has working arm joints, and cartilage and bones are forming.
Baby's vital organs are fully developed and they're starting to function.
Baby's fingernails and hair are starting to appear too.
You may have aches and pains in your abdomen, as baby's putting a pressure on your organs, veins, muscles and ligaments.
Your baby is as big as a lime
Baby's fingers and toes aren't webbed anymore.
Tooth buds, hair follicles and nail beds are forming.
The fetus will start to inhale and exhale small amounts of amniotic fluid, which helps your baby's lungs to grow and develop.