We know there are only 3 trimesters of pregnancy, but many top doctors, scientists, and psychologists, agree that a fourth trimester
occurs outside the womb once baby is born.
Not exact matches
If PROM
occurs earlier in pregnancy, the baby's lungs might not yet be mature enough to survive
outside the
womb.
Tubular (or ectopic) pregnancy is what
occurs when a fertilized egg attaches itself
outside of the
womb, in one of the mother's fallopian tubes.
Understanding the conditions that cause these cells to go off to different fates may have a bearing on health problems such as ectopic pregnancy, which
occurs when the embryo develops
outside of the
womb in about 1 of 60 pregnancies, or molar pregnancy, which is abnormal tissue growth within the uterus that affects about 1 in every 1,000 pregnancies.
(That's when a pregnancy
occurs outside of the
womb, in the abdomen.)