There are numerous causes for menstrual bleeding lasting over 10 days, which may indicate ovarian cysts or other abnormalities involving the uterus and hormonal imbalances.

Is a 40-day menstrual cycle normal? The typical range for a normal menstrual cycle is 35 to 45 days. However, if the interval between periods is significantly longer and is accompanied by symptoms of gynecological issues or suspicion of pregnancy, it is important to seek medical advice promptly.