The following definitions and fetal development photos will help you understand more about your pregnancy:
Day 1
When fertilization occurs, the baby’s features, including sex, hair and eye color, have already been determined.
Day 5 - 9
Developing baby, now an embryo, implants in the uterus.
Day 21
Human heartbeat starts.
8 Weeks Last Missed Period (LMP): 6 weeks fertilization
The nervous system has begun to function; the heart is completely formed.
9 Weeks LMP: 7 weeks fertilization
At this age, the baby’s heart has been beating for one month and the fingers and toes are developed.
10 Weeks LMP: 8 weeks fertilization
At 10 weeks, the baby hiccups and reacts to loud noises.
13 Weeks LMP: 11 weeks fertilization
The baby has begun swallowing.
16 Weeks LMP: 14 weeks fertilization
At 16 weeks the baby’s gender can be determined by ultrasound.
22 Weeks LMP: 20 weeks fertilization
At 22 weeks, the baby’s eyelashes can be seen and the lungs are developing.
