Lower cramps without having a period can result from various causes. Common reasons include ovulation pain (known as mittelschmerz), which happens mid- cycle when an egg is released and often causes cramping on one side of the lower abdomen. Early pregnancy can also cause cramps due to embryo implantation. Other possible causes include ruptured ovarian cysts, stress, hormonal imbalances, urinary tract infections, endometriosis (where uterine- like tissue grows outside the uterus), uterine fibroids, and gastrointestinal issues such as irritable bowel syndrome or inflammatory bowel disease. If cramps are persistent, severe, or accompanied by other symptoms, consulting a healthcare professional is advised to identify the exact cause and receive appropriate treatment.