Scientists have found that periods can reduce sleep duration and quality. They can also increase fatigue, depression, and stress, adversely affecting sleep.
Heavy menstrual bleeding may also cause poor sleep.
Both poor sleep and insomnia may make periods seem worse during the night. Cramping may become more noticeable without daytime distractions.
Certain sleep positions may improve period symptoms when lying down. Sleeping in the fetal position, on the back with knees supported by a pillow, or on the side can help.
Learn more about the best sleeping positions for lower back pain.