Gynecologists say it is possible that there is a link between having abnormal periods and the COVID-19 vaccine.
A recent report from the Sunday Times found that 4,000 women in the UK had temporary changes in their menstrual cycles after getting vaccinated.
It mainly included females between ages 30 and 49 who had gotten shots from Pfizer-BioNTech, Modena or AstraZeneca-University of Oxford.
Meanwhile, in the the U.S., there have been accounts of women who have gotten vaccinated against the virus and later had periods that came earlier usual, felt heavier or just appeared irregular.
Two researchers in Chicago have even launched a study looking into whether or not there is an association.Insurance Loans Mortgage Attorney Credit Lawyer
The reports have led some to question why the federal government hasn't listed irregular menstrual cycles as a potential side effect.
But doctors tell DailyMail.com that cycle changes post-vaccination are rare, typically resolve on their own without medication and do not affect fertility.
Doctors tell DailyMail.com that menstrual cycle changes after getting the COVID-19 vaccine are rare, typically resolve on their own without medication and do not affect fertility. Pictured: A woman receives a dose of the Pfizer BioNTech COVID-19 vaccine, June 2021
The UK report found that almost 4,000 women reported 'heavier than usual' bleeding or a delayed period after getting the COVID-19 vaccine.
According Britain's Medicines and Healthcare products Regulatory Agency (MHRA), there were 2,734 reports of irregular periods linked to the AstraZeneca jab up until May 17.
Another 1,158 women had menstrual changes after receiving Pfizer's shot and the remaining 66 reported changes after getting the Moderna immunization.
''The current evidence does not suggest an increased risk, following vaccination, with the UK's three Covid vaccines,' said MHRA chief executive Dr June Raine in a statement.
'The number of reports is low in relation to the number of women who have had the vaccine to date and the background rate of menstrual disorders generally.
'We continue to closely monitor these reports for potential signals.'Insurance Loans Mortgage Attorney Credit Lawyer
Two researchers are running a study to determine if there is any link between abnormal periods and the COVID-19 vaccine.
Dr Kathryn Clancy, an associate professor at the University of Illinois Urbana-Champaign, and Dr Katherine Lee, a post-doctoral scholar in the public health