If you’re like most women, you’ve probably asked yourself this question: Are my cycles regular? It’s an important question to ask, as understanding the regularity of your menstrual cycles can help you better understand your fertility and other issues related to your health.

The first step in determining if your cycles are regular is to track them. You can do this by noting the date your period starts each month, as well as its duration. The average cycle length is 28 days, but some women’s cycles can be shorter or longer.

If your cycle falls within the range of 21–35 days and your periods are consistent, this is considered a normal cycle length. However, if your cycle is shorter than 21 days or longer than 35 days, it may be an indication of an underlying health issue.

It’s also important to pay attention to how your cycle changes from month to month. If your cycle length varies significantly from month to month, it could be a sign of an imbalance in your hormones, or a sign of a more serious health issue.

If you’re concerned about your cycle regularity, it’s important to speak to your doctor and get a more thorough evaluation.