Is it normal to have two menstrual periods in one month?

Generally, having two menstrual periods in one month may be normal if one is a regular period and the other is light bleeding during ovulation, especially when no discomfort is present. However, if both bleedings are similar in volume, accompanied by symptoms such as abdominal pain, or occur frequently, it may indicate an underlying issue. If concerned, it is recommended to seek medical advice promptly. Detailed analysis is as follows:

If the interval between the two bleedings is about 21 days or longer, with one episode being heavy flow lasting 3–7 days and the other light flow lasting 1–3 days occurring approximately 14 days before the next expected period, it is likely ovulation bleeding. This results from hormonal fluctuations during ovulation causing slight shedding of the endometrium. When there is no associated pain, abnormal odor, or discomfort, it is considered a physiological phenomenon and does not require special treatment—this situation is normal.

If both episodes have similar blood volume, last longer than 7 days, occur at intervals shorter than 21 days, and are accompanied by symptoms such as abdominal pain, abnormal discharge, or lower back ache, or recur frequently for 2–3 consecutive months, it may indicate endocrine disorders or gynecological conditions such as uterine fibroids or endometrial polyps. This type of bleeding is considered abnormal and not a normal menstrual cycle. Without timely evaluation, the condition may worsen or affect fertility.

If experiencing two periods in one month along with abnormal symptoms or frequent occurrences, prompt medical consultation is advised, including ultrasound and hormone testing. Maintain a regular daily routine, avoid excessive fatigue, and minimize factors that may disrupt endocrine balance.