Table 1.

The most common etiologies of sleep disturbances during pregnancy

Sleep Disturbances	1st Trimester	2nd Trimester	3rd Trimester
Nighttime
General discomfort	+	+	+
Psychological Stress	+	+	+
Urinary frequency	+	+	+
Low back pain/joint pain	+	+	+
Leg cramps	+	+	+
Heartburn		+	+
Snoring		+	+
Dreams and nightmares		+	+
Fetal movements		+	+
Irregular uterus contractions		+	+
Nausea and vomiting	+
Daytime
Fatigue	+		+
Daytime sleepiness	+		+