Stages of  pregnancy 

    STAGE 1 

stage 1 begins  when  the sperm fertilizes the egg. The 

fertilized 

egg attaches its elf to the uterine lining. As the egg grows, 

the lungs, heart and spinal cord begin to develop. By the end

of stage 1 of pregnancy, the baby's heart will begin to beat.

The measurement of the baby during this stage is 

approximately 1/8-inch and weight is 0.03 ounces.  

STAGE 2  
    

At Stage 2 of pregnancy, the embryo begins to take the shape of a baby instead of a tadpole. By the end of stage 2, all internal organs are beginning to develop, eyes and ears are beginning to form, and the arms, finger buds, legs, and toes buds are developing. At this stage, the baby has its fingerprints. The measurement of the baby is about 1-inch long and weight is 0.1 ounce. 

STAGE  3

Stage 3 is when the embryo becomes a fetus. The face, fingers and toes are fully formed, which make the fetus look more human. The reproductive organs are forming, but sex of the baby cannot be determined. The measurement of the baby is about 3.5-inches long and it weighs 1.7 ounces. 

STAGE 4 

Stage 4 is when the mom’s belly starts to be visible. The baby may begin to hear sounds, lungs continue to develop, and eyebrows and hair begin to start to appear. At this stage, the baby’s heartbeat can be heard. The measurement of the baby is about 5.5-inches long and weight is 6 ounces.

STAGE 5

Stage 5 is when the baby’s senses are active. The skin is sensitive and may respond to sounds and light. The baby’s kidneys begin to function and emit urine. At this stage, the immune system begins to help protect the baby from illness and infection. The measurement of the baby is about 7.5 inches and it weighs about 1 pound. 

STAGE 6 

Stage 6, the eye retinas continue to develop, and the eyelids start to open and close. The baby also becomes aware of sounds. At this time, the mom may experience kicking in the belly due to the fact the baby is move mobile. The measurement of the baby is about 10 inches and weight is about 2 pounds. 

STAGE 7

In stage 7, the baby can see and hear and becomes aware of mom and dad’s voices. The lungs are continuing to develop, bones and muscles are becoming stronger. Eyelashes start to grow, and the reproductive organs start to develop. The measurement of the baby is about 11 inches and weight is 3 pounds.

STAGE 8

In stage 8, brain growth of the baby occurs. The baby’s body is almost fully formed. The lungs are still under development. The measurement of the baby is about 18 inches and weight is 5 pounds. 

STAGE 9

At stage 9, the baby is ready to be born and turns its head down in preparation. The baby’s lungs are fully developed it continues to gain weight. The measurement of the baby is about 21 inches and weight is between 6 and 8 pounds.