MONTH 4: Weeks 12-16
Possible physical changes
See Months 2 and 3. Increase or decrease in sexual drive, frequent nighttime urination.
Possible emotional changes
See Months 2 and 3. Fear or anxiety about bodily changes, motherhood, finances, or new sense of calmness and acceptance, dreams of baby animals, such as kittens or puppies, with their mothers.
Possible appetite changes
Increasing appetite, food cravings, morning sickness, nausea with or without vomiting.
The inside story
Fetus weighs 1/2 ounce and measures 2 1/2 to 3 inches, the size of a large goldfish, with a disproportionately large head. At 13 weeks eyes are developed, although lids stay closed for several months. At 15 weeks ears are fully developed. Most major organs, circulatory system and urinary tract are operating, gender is impossible to determine, even with ultrasound.
You may suffer from disrupted sleep because of frequent need to urinate. To ease grogginess, retire an hour or two earlier and/or take an afternoon nap.
Aerobic exercise , guided imagery, meditation, yoga, calisthenics, walking, swimming, gentle indoor cycling, jogging, tennis, cross country skiing (below 10,000 feet), light weight training, outdoor cycling.
See Month 3.
When to call your doctor
Pink, red or brown discharge or bleeding, with or without cramping.