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What are the physiological changes in the third trimester of pregnancy?

By Silvia Azaña Gutiérrez B.Sc., M.Sc. (embryologist).
Last Update: 06/12/2024

The physiological changes that usually occur in the third trimester of gestation are closely related to the increase in the size of the uterus.

Among the main ones, we can mention:

  • Slowing of intestinal transit due to the pressure exerted by the uterus on the intestine.
  • Choking sensation and shortness of breath, because the increase in the size of the uterus causes the diaphragm to rise and there is less lung capacity.
  • Change in the woman's center of gravity, to compensate for the increased size of the belly and to maintain balance.
  • Increased frequency of urination, due to the pressure of the uterus on the bladder.
  • Swelling of the feet, ankles and legs, due to difficulties in venous return.

In addition, it is possible to observe that the breasts have begun to secrete colostrum.

Read the full article on: What Physiological Changes Occur during Pregnancy? ( 35).
 Silvia Azaña Gutiérrez
Silvia Azaña Gutiérrez
B.Sc., M.Sc.
Embryologist
Graduate in Health Biology from the University of Alcalá and specialized in Clinical Genetics from the same university. Master in Assisted Reproduction by the University of Valencia in collaboration with IVI clinics.
License: 3435-CV
Embryologist. Graduate in Health Biology from the University of Alcalá and specialized in Clinical Genetics from the same university. Master in Assisted Reproduction by the University of Valencia in collaboration with IVI clinics. License: 3435-CV.