A normal menstrual cycle can range from 21 to 35 days, with the average being 28 days. The length of a period can also vary and can last anywhere from 2 to 7 days. Therefore, having a 4-day period can be considered normal. However, every person’s menstrual cycle is different, and what is considered normal for one person may not be the same for another.
It’s always best to consult with a doctor if you have any concerns about your menstrual cycle or any other health issues. If you have always had a 4 day period and it has been consistent over time, it is probably normal for you. But if you experience a sudden change in the duration of your period, it’s important to consult with a healthcare professional to rule out any underlying conditions.