Definition of Pregnancy:
The pregnancy is the fertilization and development of one or more off spring known as an embryo or fetus and it’s the period from conception till birth.
The egg is fertilized by a sperm then implanted in the in the lining of the uterus to develop to placenta and embryo, and later to fetus.
Development of the Embryo
Normal pregnancy last 38 to 42 weeks beginning from the first day of the women last menstrual period and it’s divided to 3 stages and each stage last for 3 months.
- 1st trimester: It carries the highest risk of miscarriage (natural death of embryo or fetus).
- 2nd trimester: The development of fetus can be more easily monitored.
- 3rd trimester: It approximates the point of viability, or the ability of fetus to survive with or without medical help outside the uterus.
Symptoms of Pregnancy:
A- 1st trimester (1 - 12 weeks) :
B- 2nd trimester (13 - 28 weeks) :
C- 3rd trimester (29 - 40 weeks) :
- a. Some may have nipple discharge
b. Low back aches
c. Braxton hick's contraction may become stronger
d. Stretch marks may appear on abdomen, breast
e. Dark lines may appear from navel to pupil hair
f. The baby’s head drops down low in pelvis at about the week 36 and this relieve pressure on upper abdomen and lungs.
Fetal Development clip no 3
- a. Healthy weight gain is between 25-35 pounds and pregnant women need an additional 300 calories/day.
b. In the first 3 months, women will gain 3 to 5 pounds.
c. After the first 3 months, women gain 1-2 pounds a week until baby is born.
d. On average, the birth weight of a healthy full term baby is 7.5 lb. (3.4 kgs). The weight of placenta and fluid together is 3.5 lb. The remaining weight that women gains during pregnancy is water retention and fat stores. The breast gain about 2 lb. and increase blood volume cause 4/6 weight gain.
Other problem that may be annoying
- a. Constipation.
c. Sensitive gums.
d. Dry eyes.
e. Ankle swelling.
f. Varicose veins.
Those symptoms usually disappear after delivery.
g. Chloasma (mask of pregnancy)
h. Blotches of pale brush skin on forehead, cheeks, and nose, they usually disappear after pregnancy or may become permanent.
Some symptoms that could be dangerous:
- a. Abdominal pain
b. Fluid leakage from vagina (rupture amniotic sac).
c. No fetal movement for 24 hours
d. Continuous headache
e. Persistent vomiting
f. Blared vision during last 3 month
g. Sudden swelling of hands, face or eyelid during the last 3 months