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Published on: 3/5/2025

Is It Concerning to Have 2 Menstrual Periods in a Month?

Occasionally having two periods in one month can happen due to changes in your cycle and isn’t always a cause for alarm, though it might show that your cycle is a bit irregular.

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Explanation

Sometimes, women may notice two periods in one month. This can happen if your menstrual cycle is shorter than usual, meaning you start a new cycle before the old one is completely over. Changes in your body, like stress, slight shifts in your weight, or natural hormone changes, can make your cycle irregular. If this occurs only once or twice, it’s usually not something to worry about. Many factors, such as differences in cycle lengths or small timing variations, can cause what seems like an extra period. However, if you have two periods in a month frequently or if you also notice other symptoms like severe pain, dizziness when standing, or very heavy bleeding, it might be a good idea to speak with a healthcare provider to make sure everything is okay. Tracking your cycle with an app or calendar can help you see any patterns over time. This way, you and your provider can decide if any further examinations or treatments are needed.

(References)

  • Dasharathy SS, Mumford SL, Pollack AZ, Perkins NJ, Mattison DR, Wactawski-Wende J, Schisterman EF. Menstrual bleeding patterns among regularly menstruating women. Am J Epidemiol. 2012 Mar 15;175(6):536-45. doi: 10.1093/aje/kwr356. Epub 2012 Feb 20. PMID: 22350580; PMCID: PMC3299419.

  • Bae J, Park S, Kwon JW. Factors associated with menstrual cycle irregularity and menopause. BMC Womens Health. 2018 Feb 6;18(1):36. doi: 10.1186/s12905-018-0528-x. PMID: 29409520; PMCID: PMC5801702.

  • Grieger JA, Norman RJ. Menstrual Cycle Length and Patterns in a Global Cohort of Women Using a Mobile Phone App: Retrospective Cohort Study. J Med Internet Res. 2020 Jun 24;22(6):e17109. doi: 10.2196/17109. PMID: 32442161; PMCID: PMC7381001.

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