Pregnancy Calendar

Pregnancy Calendar



Pregnancy is the carrying of one or more offspring, known as a fetus or embryo, inside the womb of a female. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets. Human pregnancy is the most studied of all mammalian pregnancies.

Embryogensis Preterm Postterm Childbirth on Average

Fetal Growth Term Checkpoint 50% Chance of Survival

Week/event/womb



First Trimester

week 4 week 5 week 6 week 7 week 8 week 12

Second Trimester

week 17 week 18 week 20 week 21 week 28

Third Trimester

week 38 week 42



4 weeks- Umbilical cord is introduced.

5 weeks- Organs begin to form.

6 weeks- Facial fetures appear arms and legs

8 weeks- Baby starts to move

12 weeks-Hormone levels increase drastically

17 weeks- Brain synapses begin to fire

18 weeks-Age can be determined

20 weeks-Uterus expands 20x normal size

21 weeks- Heartbeat can be heard

28 weeks- Beginning of conscious thought

38 weeks-Baby inverts position

42 weeks-Complications can occur PREGNANCY CALENDAR week Cvent Pregnancy is the carrying of one or more offspring, known as a fetus or embryo, inside the womb of a female. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets. Human pregnancy is the most studied of all mammalian pregnancies. Embryogenesis Preterm Postterm Childbirth on Average womb Fetal Growth Term Checkpoint 50% Chance of Survival FIRST TRIMESTER week week week 6 week week SECOND TRIMESTER week week week 20 week qweek- 18 THIRD TRIMESTER week 38 week 00000 0000 000 EVENTS 4 weeks Umbilical cord is introduced 5 weeks Organs begin to form 6 weeks Facial fetures appear arms and legs 8 weeks Baby starts to move 12 weeks Hormone levels increase drastically 17 weeks Brain synapses begin to fire 18 weeks Age can be determined 20 weeks Uterus expands 20x normal size 21 weeks Heartbeat can be heard 28 weeks Beginning of conscious thought 38 weeks Baby inverts position 42 weeks Complications can occur PREGNANCY CALENDAR week Cvent Pregnancy is the carrying of one or more offspring, known as a fetus or embryo, inside the womb of a female. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets. Human pregnancy is the most studied of all mammalian pregnancies. Embryogenesis Preterm Postterm Childbirth on Average womb Fetal Growth Term Checkpoint 50% Chance of Survival FIRST TRIMESTER week week week 6 week week SECOND TRIMESTER week week week 20 week qweek- 18 500000 O 5 THIRD TRIMESTER week 38 week 00000 0000 000 EVENTS 4 weeks Umbilical cord is introduced 5 weeks Organs begin to form 6 weeks Facial fetures appear arms and legs 8 weeks Baby starts to move 12 weeks Hormone levels increase drastically 17 weeks Brain synapses begin to fire 18 weeks Age can be determined 20 weeks Uterus expands 20x normal size 21 weeks Heartbeat can be heard 28 weeks Beginning of conscious thought 38 weeks Baby inverts position 42 weeks Complications can occur PREGNANCY CALENDAR week Cvent Pregnancy is the carrying of one or more offspring, known as a fetus or embryo, inside the womb of a female. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets. Human pregnancy is the most studied of all mammalian pregnancies. Embryogenesis Preterm Postterm Childbirth on Average womb Fetal Growth Term Checkpoint 50% Chance of Survival FIRST TRIMESTER week week week 6 week week SECOND TRIMESTER week week week 20 week qweek- 18 500000 O 5 THIRD TRIMESTER week 38 week 00000 0000 000 EVENTS 4 weeks Umbilical cord is introduced 5 weeks Organs begin to form 6 weeks Facial fetures appear arms and legs 8 weeks Baby starts to move 12 weeks Hormone levels increase drastically 17 weeks Brain synapses begin to fire 18 weeks Age can be determined 20 weeks Uterus expands 20x normal size 21 weeks Heartbeat can be heard 28 weeks Beginning of conscious thought 38 weeks Baby inverts position 42 weeks Complications can occur PREGNANCY CALENDAR week Cvent Pregnancy is the carrying of one or more offspring, known as a fetus or embryo, inside the womb of a female. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets. Human pregnancy is the most studied of all mammalian pregnancies. Embryogenesis Preterm Postterm Childbirth on Average womb Fetal Growth Term Checkpoint 50% Chance of Survival FIRST TRIMESTER week week week 6 week week SECOND TRIMESTER week week week 20 week qweek- 18 500000 O 5 THIRD TRIMESTER week 38 week 00000 0000 000 EVENTS 4 weeks Umbilical cord is introduced 5 weeks Organs begin to form 6 weeks Facial fetures appear arms and legs 8 weeks Baby starts to move 12 weeks Hormone levels increase drastically 17 weeks Brain synapses begin to fire 18 weeks Age can be determined 20 weeks Uterus expands 20x normal size 21 weeks Heartbeat can be heard 28 weeks Beginning of conscious thought 38 weeks Baby inverts position 42 weeks Complications can occur PREGNANCY CALENDAR week Cvent Pregnancy is the carrying of one or more offspring, known as a fetus or embryo, inside the womb of a female. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets. Human pregnancy is the most studied of all mammalian pregnancies. Embryogenesis Preterm Postterm Childbirth on Average womb Fetal Growth Term Checkpoint 50% Chance of Survival FIRST TRIMESTER week week week 6 week week SECOND TRIMESTER week week week 20 week qweek- 18 500000 O 5 THIRD TRIMESTER week 38 week 00000 0000 000 EVENTS 4 weeks Umbilical cord is introduced 5 weeks Organs begin to form 6 weeks Facial fetures appear arms and legs 8 weeks Baby starts to move 12 weeks Hormone levels increase drastically 17 weeks Brain synapses begin to fire 18 weeks Age can be determined 20 weeks Uterus expands 20x normal size 21 weeks Heartbeat can be heard 28 weeks Beginning of conscious thought 38 weeks Baby inverts position 42 weeks Complications can occur PREGNANCY CALENDAR week Cvent Pregnancy is the carrying of one or more offspring, known as a fetus or embryo, inside the womb of a female. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets. Human pregnancy is the most studied of all mammalian pregnancies. Embryogenesis Preterm Postterm Childbirth on Average womb Fetal Growth Term Checkpoint 50% Chance of Survival FIRST TRIMESTER week week week 6 week week SECOND TRIMESTER week week week 20 week qweek- 18 500000 O 5 THIRD TRIMESTER week 38 week 00000 0000 000 EVENTS 4 weeks Umbilical cord is introduced 5 weeks Organs begin to form 6 weeks Facial fetures appear arms and legs 8 weeks Baby starts to move 12 weeks Hormone levels increase drastically 17 weeks Brain synapses begin to fire 18 weeks Age can be determined 20 weeks Uterus expands 20x normal size 21 weeks Heartbeat can be heard 28 weeks Beginning of conscious thought 38 weeks Baby inverts position 42 weeks Complications can occur PREGNANCY CALENDAR week Cvent Pregnancy is the carrying of one or more offspring, known as a fetus or embryo, inside the womb of a female. In a pregnancy, there can be multiple gestations, as in the case of twins or triplets. Human pregnancy is the most studied of all mammalian pregnancies. Embryogenesis Preterm Postterm Childbirth on Average womb Fetal Growth Term Checkpoint 50% Chance of Survival FIRST TRIMESTER week week week 6 week week SECOND TRIMESTER week week week 20 week qweek- 18 500000 O 5 THIRD TRIMESTER week 38 week 00000 0000 000 EVENTS 4 weeks Umbilical cord is introduced 5 weeks Organs begin to form 6 weeks Facial fetures appear arms and legs 8 weeks Baby starts to move 12 weeks Hormone levels increase drastically 17 weeks Brain synapses begin to fire 18 weeks Age can be determined 20 weeks Uterus expands 20x normal size 21 weeks Heartbeat can be heard 28 weeks Beginning of conscious thought 38 weeks Baby inverts position 42 weeks Complications can occur