1. Changes During Pregnancy

2. Sperm and egg unite after sexual intercourse.
During conception…
Sperm and egg unite after sexual intercourse.

3. Sperm that enter the uterus quickly swim into the Fallopian tubes.
During conception…
Sperm that enter the uterus quickly swim into the Fallopian tubes.

4. During conception…
If an ovum is present, the sperm swarm the ovum and try to break through the surface.

5. During conception…
Once the ovum has been fertilized, it attaches to the wall of the uterus.
Menstruation stops until the pregnancy is over.

6. The male determines the sex of the child.
During conception…
The male determines the sex of the child.

7. Fetal Development
Month by Month

8. First Month
By the end of the two weeks, the zygote is about the size of a pin head.
The heart, which is no larger than a poppy seed, has begun beating.
Egg has attached itself to the lining of the uterus.

10. Development of the baby…
Egg attaches to the lining of the uterus.
Called a zygote until it attaches to the lining of the uterus then becomes an embryo.

11. Changes in the mother… Missed period Enlarged breasts
Frequent urination

12. First Month

13. Two Months
The embryo is about 1/4 inch long and has distinct, slightly webbed fingers.
Face, eyes, ears, and limb have developed.
Veins are clearly visible.
Heart has divided into right and left chambers.
Changes into an embryo at the end of eight weeks.

14. Increased urination due to pressure on bladder
Changes in the mother…
Swelling of breasts
Increased urination due to pressure on bladder
Nausea (“morning sickness”)

15. Two Months

16. Three Months By now the fetus is 1 inch long and is fully formed.
He has begun swallowing and kicking.
All organs and muscles have formed and are beginning to function.

17. Changes in the mother… Breasts become firmer and fuller, may ache
Nausea, fatigue
Frequent urination may continue
Abdomen becomes slightly larger (the uterus is the size of an orange)
Weight gain may total 2-4 lbs.

18. Four Months
Baby is covered with a layer of thick, downy hair called lanugo.
His heartbeat can be heard clearly. This is when you may feel your baby's first kick.
Size about 3 inches long, weighs 1 ounce.

19. Changes in the mother… Appetite increases
Morning sickness is usually gone
Abdomen continues to grow slowly

20. 4 months

21. Five Months
A protective coating called vernix caseosa begins to form on baby's skin. At this time the baby is about 6 ½-7 inches long and weigh almost 4-5 ounces.

22. 5 months: Changes in the mother…
Enlarged abdomen becomes apparent
Increased size may begin to affect posture
Slight fetal movements felt

23. Six Months Eyebrows and eyelids are visible.
The baby's lungs are filled with amniotic fluid, and he/she has started breathing motions.
If the mother talks or sings, the baby can hear.
8-10 inches, about 8-12 ounces.

24. Six Months: Changes in the mother…
Fetal movements are sensed as strong kicks, thumps, and bumps
Weight gain may total pounds at the beginning of the month.

25. 6 Months

26. Seven Months
At the beginning of the seventh month, the baby weighs about 1 ½ pounds and is about inches long
His body is well-formed
Fingernails cover his fingertips

27. Eight Months
Fetus is gaining about half a pound per week, and layers of fat are piling on.
He/she has probably turned head-down in preparation for birth.
He weighs between 2 1/2 and 3 pounds.

28. 8 months

29. Eight Months: Changes in the mother…
Discomfort may result from increased size of abdominal area
Backache, fatigue, leg cramps, shortness of breath
Fetal kicks may disturb mother’s rest
Weight gain totals about pounds at start of the month

30. Nine Months
Fetus is a hefty 5 to 6 pounds and measures between 17 and 18 inches. As he becomes more crowded, the mother may feel him move around less.

31. Ninth Month: Changes in the mother…
“Lightening” felt as the fetus drops into the pelvis and decreases pressure on mother’s organs
False labor pains may be experienced
A total weight gain of lbs. is typical
Other discomfort may continue

32. Revised 10/15/10 K. Brown