Why do pregnant women feel tired?

One of the earliest signs of pregnancy is feeling exhausted or fatigued.   In the beginning of pregnancy this is considered completely normal and often expected. Many hormonal changes are occurring as pregnancy develops, and women experience fatigue and an increased need for sleep. In the second and third trimester of pregnancy, lower blood pressure levels, lower blood sugar levels, hormonal changes due to the sleep-inducing effects of progesterone, metabolic changes, and the physiologic anemia of pregnancy all contribute to fatigue. Your body is working harder to accommodate the fetus that is growing inside of you and as a result the feeling of fatigue can be overwhelming.  Plenty of rest, staying adequately hydrated and eating a well balanced diet will boost your energy levels. Women should check with their Obstetrician or health care provider to determine if an additional work up, prenatal vitamin changes, and/or supplemental iron would be beneficial.