London Daily

Focus on the big picture.
Saturday, Aug 30, 2025

Does the Covid vaccine impact periods?

Does the Covid vaccine impact periods?

Almost 4,000 UK women have reported changes to their period patterns after receiving a coronavirus vaccine.

The Medicines and Healthcare products Regulatory Agency (MHRA) said that it will ‘closely monitor these reports for potential signals.’

But is there a link between vaccines and changes in menstrual cycles?

Metro.co.uk spoke to a leading gynaecologist to find out more.

Does the Covid vaccine impact periods?


There’s no official research or links between Covid-19 vaccines and menstrual cycles.

In the latest weekly report on vaccine-adverse reactions, the MHRA published information on reports of menstrual disorders following the vaccine.

There is no official link between Covid jabs and periods


The MHRA said it received reports ranging from heavier-than-usual periods to delayed periods and unexpected vaginal bleeding.

However, the agency concluded: ‘The current evidence does not suggest an increased risk of either menstrual disorders or unexpected vaginal bleeding following the vaccines.’

It added: ‘The number of reports of menstrual disorders and vaginal bleeding is low in relation to both the number of females who have received Covid-19 vaccines to date and how common menstrual disorders are generally.

‘The MHRA will continue to closely monitor reports of menstrual disorders and vaginal bleeding with Covid-19 vaccines.’

Despite this conclusion, many people are still convinced that their cycles have been impacted by the vaccine.

Metro.co.uk spoke with Dr Pat O’Brien, a Consultant in Obstetrics & Gynaecology at University College London Hospitals and Vice President for membership of the Royal College of Obstetricians & Gynaecologists (RCOG), to find out why so many people are noticing a link between the jab and their periods.



Dr O’Brien explained: ‘So many people are having the vaccines right now that we have to be open to the possibility that these things will coincide from time to time.

‘Don’t panic – keep mindful of the fact that these things can happen from time to time by chance.’

‘It’s a really common thing. And, very often, after a month or two things go back to normal. Sometimes we find the reason, sometimes we don’t.’

O’Brien added: ‘When we do find a cause, it is often something simple like a change in weight, stress, change in exercise, or even long-haul flights. There are lots of things like that that we know can impact periods. They’re really delicate.’

It is important to note that over 43 million people in the UK have received a vaccine, with many of them being people who experience periods.

Dr O’Brien explained: ‘In context, even you accept that 4,000 people have had their periods impacted by the vaccine, it doesn’t by any means represent everybody.’

However, it is also possible that more people have experienced similar side effects, but have not reported them.

You should report any reactions on the MHRA’s yellow card scheme


It is important that anyone who suspects a reaction to the Covid-19 vaccine reports it through the MHRA’s yellow card scheme.

The scheme helps identify trends and side effects that may be associated with the vaccine. The more people come forward with their period disturbances, the more chance there is of finding out if there is a link between cycles and jabs.

RCOG confirmed that some women had reported heavier periods after receiving vaccines and added that it would support ‘more data collection in this area to understand why this might be the case’.

Although there is not yet evidence to support a link, many healthcare specialists do believe that vaccines can disturb periods.

Women’s healthcare specialist Dr Nighat Arif shared a video on TikTok and Twitter explaining why jabs may have an impact on your period.

Dr Arif said: ‘Now, think about it: When we give you the Covid-19 vaccine, it triggers the immune response. That immune response for some people can mean a headache, a temperature, aches and pains, and just generally feeling unwell.

‘We do also know that the immune system sits around the lining of the womb so, therefore, for some women, it is completely logical that it will affect their periods.’


‘You might get a missed period, a prolonged period, or a heavy period. Lots of things impact our cycles.’

However, she stressed that this change should not be long-lasting and does not effect fertility.

When should you go to the doctor about period changes?


Although your period may not be linked to the Covid-19 vaccine, it is still important to get menstrual changes checked out by your doctor.

You should visit the GP if any of the following occurs:

* Bleeding that requires more than one tampon or sanitary pad in an hour, for several hours in a row

* Bleeding after sex

* Bleeding after menstruation

* Severe pain – O’Brien said ‘even just one really painful period should be enough to trigger a visit to the doctor’

* Abnormal discharge or colour

* Irregular periods lasting over two or three months

Dr O’Brien said: ‘The bottom line advice should be this: If you’re worried, please see a doctor.

‘Also if this change persists for a month or two. Particularly if you get new bleeding after menopause – that should never be taken for granted.’

Newsletter

Related Articles

0:00
0:00
Close
Corporate America Cuts Middle Management as Bosses Take On Triple the Workload
Parents Sue OpenAI After Teen’s Death, Alleging ChatGPT Encouraged Suicide
Amazon Faces Lawsuit Over 'Buy' Label on Digital Streaming Content
Federal Reserve Independence Questioned Amid Trump’s Push to Reshape Central Bank
British Politics Faces Tumultuous Autumn After Summer of Rebellions and Rising Farage Momentum
US Appeals Court Rules Against Most Trump-Era Tariffs
UK Sought Broad Access to Apple Users’ Data, Court Filing Reveals
UK Bank Shares Dive Over Potential Tax on Sector
Germany’s Auto Industry Sheds 51,500 Jobs in First Half of 2025 Amid Deepening Crisis
Bruce Willis Relocated Due to Advanced Dementia
French and Korean Nuclear Majors Clash As EU Launches Foreign Subsidy Probe
EU Stands Firm on Digital Rules as Trump Warns of Retaliation
Getting Ready for the 3rd Time in Its History, Germany Approves Voluntary Military Service for Teenagers
Argentine President Javier Milei Evacuated After Stones Thrown During Campaign Event
Denmark Confronts U.S. Diplomat Over Covert Trump-Linked Influence in Greenland
Starmer Should Back Away from ECHR, Says Jack Straw
Trump Demands RICO Charges Against George Soros and Son for Funding Violent Protests
Taylor Swift Announces Engagement to NFL Star Travis Kelce
France May Need IMF Bailout, Warns Finance Minister
Chinese AI Chipmaker Cambricon Posts Record Profit as Beijing Pushes Pivot from Nvidia
After the Shock of Defeat, Iranians Yearn for Change
Ukraine Finally Allows Young Men Aged Eighteen to Twenty-Two to Leave the Country
The Porn Remains, Privacy Disappears: How Britain Broke the Internet in Ten Days
YouTube Altered Content by Artificial Intelligence – Without Permission
Welcome to The Definition of Insanity: Germany Edition
Just a reminder, this is Michael Jackson's daughter, Paris.
Spotify’s Strange Move: The Feature Nobody Asked For – Returns
Manhunt in Australia: Armed Anti-Government Suspect Kills Police Officers Sent to Arrest Him
China Launches World’s Most Powerful Neutrino Detector
How Beijing-Linked Networks Shape Elections in New York City
Ukrainian Refugee Iryna Zarutska Fled War To US, Stabbed To Death
Elon Musk Sues Apple and OpenAI Over Alleged App Store Monopoly
2 Australian Police Shot Dead In Encounter In Rural Victoria State
Vietnam Evacuates Hundreds of Thousands as Typhoon Kajiki Strikes; China’s Sanya Shuts Down
UK Government Delays Decision on China’s Proposed London Embassy Amid Concerns Over Redacted Plans
A 150-Year Tradition to Be Abolished? Uproar Over the Popular Central Park Attraction
A new faith called Robotheism claims artificial intelligence isn’t just smart but actually God itself
Deputy Prime Minister Angela Rayner Purchases Third Property Amid Housing Tax Reforms Debate
HSBC Switzerland Ends Relationships with Over 1,000 Clients from Saudi Arabia, Lebanon, Qatar, and Egypt
Sharia Law Made Legally Binding in Austria Despite Warnings Over 'Incompatible' Values
Italian Facebook Group Sharing Intimate Images Without Consent Shut Down Amid Police Investigation
Dutch Foreign Minister Resigns Amid Deadlock Over Israel Sanctions
Trump and Allies Send Messages of Support to Ukraine on Independence Day Amid Ongoing Conflict
China Reels as Telegram Chat Group Shares Hidden-Camera Footage of Women and Children
Sam Nicoresti becomes first transgender comedian to win Edinburgh Comedy Award
Builders uncover historic human remains in Lancashire house renovation
Australia Wants to Tax Your Empty Bedrooms
MotoGP Cameraman Narrowly Avoids Pedro Acosta Crash at Hungarian Grand Prix
FBI Investigates John Bolton Over Classified Documents in High-Profile Raids
Report reveals OpenAI pitched national ChatGPT Plus subscription to UK ministers
×