Developmental Changes
First Trimester (weeks 0 - 13)
Changes in you:
a slight weight gain or weight loss
no monthly period(s)
breasts enlarge and may become tender
nipples may enlarge and protrude
constipation
frequent urination
indigestion and heartburn
nausea and maybe vomiting (morning sickness)
food cravings
general fatigue
Changes in baby:
placenta develops
heart starts to beat
all major organs form
the nervous system develops
bones start to form
head, face, eyes, ears, legs, toes, arms and fingers develop
genitals develop
hair appears
buds for future teeth develop
Developmental Changes
Second Trimester (weeks 14 - 28)
Changes in you:
increased appetite
swollen feet and ankles
the abdomen expands (you begin to 'show')
skin around abdomen and breasts stretches, stretch marks may appear
between month 4 and month 5 you start to feel the fetus move
nipples may darken
brown patches may appear on the face (chloasma)
a dark line may appear from mid-abdomen to pubic hair (linea negra)
stomach region may ache as ligaments stretch
Changes in baby:
moves and kicks
sleeps and wakes
eyebrows, eyelashes and fingernails appear
skin is covered in a wax-like coating (vernix) and fine hair (lanugo)
organs grow quickly and begin to function
Developmental Changes
Third Trimester (weeks 29 - 40)
Changes in you:
feel the baby's movements - a lot
shortness of breath
more frequent urination
a thin, yellow liquid (colostrum) may leak from nipples
an innie may become an outie (belly button)
abdominal contractions (false or actual labor)
cervix dilates
Changes in baby:
baby kicks and stretches
lanugo disappears
bones harden except for the skull
significant fetal weight gain
usually turns to head-down position for birth
One very important word of comfort, here. These development schedules vary from mom to mom and from pregnancy to pregnancy. You may not experience what your sister experienced. You may not experience what you experienced the last time you were pregnant.
So, relax. See your obstetrician for all of your routine visits and discuss any concerns you have regarding your development or the development of that little person growing inside you. As long as you stay current on doctor's visits, you'll be less concerned about variations in pregnancies.
