Menopause is known to cause many sleeping problems. Many women start to feel hot at night and are plagued by hot flashes and night sweats as they try to sleep. Because your estrogen and progesterone levels naturally decrease during perimenopause and menopause, this can trigger insomnia. This is partly because progesterone is a hormone that tends to make you drowsy. This is why insomnia is a common symptom of menopause.