Covid Vaccine And Menstrual Cycle | Does Covid Vaccine Affect Menstrual Cycle?

Covid 19 vaccination is associated with some changes in menstruation. Research has not directly linked with these changes, but according to anecdotal reports, covid vaccine leads to irregular periods, light periods, heavy periods after taking the vaccine. Other factors also impact menstruation.

From the beginning of April 2021, reported 958 menstrual problems after taking the covid vaccine.
This effect with the Astrazeneca vaccine is more common than the Pfizer vaccine.

I had earlier shared Vaccines Covid 19. I hope you read the post.

There’s evidence, both research and anecdotal reports, that COVID-19 may affect your period.

Let’s break down what you know so far.

I have already shared a post related to this topic Menstrual Disorder I hope you read this post.

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Table of Contents

Can COVID-19 affect your menstrual cycles?

During this pandemic, there have been many anecdotal reports about how COVID-19 impacts the menstrual cycle. Some of the reports included:

Read: How long After Missed Period Take Pregnancy Test?

Researched the impact of COVID-19 on menstrual cycles. However, it is possible that the infection itself could stress your body or hormone levels, leading to notable changes in your period.

Insights into COVID-19 and menstruation

Found changes in menstrual volume in 45 out of 177 people. Of these 45 individuals, 36 experienced a lighter period, while 10 had a heavier period.

People with COVID-19 were more likely to have a menstrual cycle that was longer than 36 days. Researchers found that 34% of people with illness had long cycles, compared to 19% of people with mild illness.

The findings of the study:

  • People experience temporary changes in menstrual cycle length due to COVID-19.
  • The observed changes were lighter-than-normal periods and raised menstrual cycle length.
  • Levels of sex hormones didn’t differ between those with COVID-19.
  • Maximum people returned to their regular menstrual patterns 1 to 2 months after having COVID-19.

Does Covid Vaccine Affect Menstrual Cycle

COVID-19 vaccination has been associated with menstruation. However, research hasn’t linked these changes to the COVID-19 vaccines. Likewise, research into the way vaccines can impact menstruation is generally lacking.

So far, reports are anecdotal and often describe an irregular or heavier periods after vaccination. However, these effects appear temporary, with most experiencing a return to standard menstrual patterns in the weeks after vaccination.

While these effects have been reported after the COVID-19 vaccination, there hasn’t been any research to link menstruation changes with the COVID-19 vaccine directly. Additionally, many other factors can impact menstruation.

Causes your period may be different after an illness

Menstrual irregularities are expected to impact 5 to 35.6% of those who menstruate, depending on age and location. These irregularities can include:

Many illnesses or medications can cause your period to be different. Let’s look at some changes and their causes.

Irregular periods

Irregular periods lead to situations where your menstrual cycle is shorter or longer than usual. Irregular periods are generally light and can be caused by:

Here are a few articles to check out:

Heavy periods

Read this articles:

Missing periods

Missing periods are known as amenorrhea. You’re said to have amenorrhea if you haven’t had a period for three consecutive months.

Must read: At What Age Does Menopause Start?

Can COVID-19 pandemic stress affect your Menstrual Cycle?

If you’ve been seeing changes in your period lately, it could be down to pandemic stress. Indeed, pandemic-related factors can add to increased stress levels, such as concerns about:

  • Personal health and health of your loved ones
  • Social isolation related quarantine
  • Helping children with remote learning
  • Maintaining a job and weight
  • Increased drinking


It’s likely possible that having COVID-19 temporarily affects your period. The reason why this happens is unknown. However, the study has found that the expected effects are light periods or longer menstrual cycles.

Many conditions that can cause menstrual irregularities, both physical and mental, can play a significant role. Be sure to see a healthcare specialist or OB-GYN if you have concerns about period and COVID-19.

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