You are 45 and your period has lasted 12 days it only ever lasts 4 days?

It is important to note that as women approach menopause, their menstrual cycles can become irregular and unpredictable, including changes in the duration of their periods. If your period has suddenly changed from its usual 4 days to 12 days at age 45, it is recommended that you consult with a healthcare professional to determine the cause. Your doctor may ask you about your symptoms, perform a physical exam, and potentially order tests to rule out any underlying medical conditions that could be affecting your menstrual cycle. It's important to seek medical advice for any significant changes in your menstrual pattern, especially at this stage of life.