Sphincter Stretching can be expect in some or all of these changes in a normal pregnancy:
* In the first trimester - absence of menstrual flow; minor weight gain; increased urination; enlarged and perhaps sore breasts; morning sickness or nausea.
* In the second trimester - significant weight gain (about a pound a week); sphincter stretching of the abdominal wall and pelvis; possibly backache, constipation, heartburn and fetal movement.
* In the third trimester - swollen limbs from fluid retention; leaking breasts; constipation; hemorrhoids; insomnia; discomfort below the rib cage a few weeks before the baby drops at about 36 weeks.
