Can the COVID-19 Vaccine Affect Your Period?

Alexis Bryan
Alexis Bryan23 Aug 2022
Reviewed and Fact Checked ✔️

There is no evidence that the currently approved COVID-19 vaccines affect your period. Your menstrual cycle can change due to stress, diet, shifts in your sleep schedule, and sickness. Therefore, it is highly recommended that you get vaccinated against COVID-19 to protect yourself and others from severe illness. 

If you are concerned about changes in your menstrual cycle, it never hurts to get checked by a healthcare professional. A membership with Mira can help you access affordable urgent care visits and lab testing for only $45 per month.

Reports of Menstrual Changes After COVID-19 Vaccination 

There have been anecdotal reports of irregular periods after receiving a COVID-19 vaccination. Some of the changes women have reported include longer or heavier periods than what they usually experience. In most instances, it appears as if these changes in menstruation are short-lasting and correct on their own. 

While these reports have been concerning for many women, there is currently no scientific evidence to suggest a link between COVID-19 vaccination and changes in menstruation. The number of reports of irregular periods is very low compared to the number of people who have gotten vaccinated and is not significantly higher than the percent of people who experience menstrual changes in the general population. 

Although current data does not support a link between COVID-19 vaccination and abnormal periods, the NIH is funding five studies to explore this topic further to give women more clear answers on any linkages between vaccinations and menstruation. These studies will specifically be looking at changes in flow, cycle length, and pain, among other symptoms women, experience during their periods. 

If there is any relationship between the COVID-19 vaccination and menstruation, researchers suggest that irregular periods could be caused by the body’s immune response to the vaccine rather than the actual materials in the vaccine. Therefore, The American College of Obstetricians and Gynecologists still recommends that women get vaccinated and note that there is no need to schedule vaccination around your menstruation cycle. 

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Alexis Bryan

Alexis Bryan MPH, is a recent graduate of Columbia’s Mailman School of Public Health. She is passionate about increasing access to care to improve health outcomes. Outside of work, she loves to travel, read, and pay too much attention to her plants.

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