COVID AND THE VACCINE - TRUTH, LIES, AND MISCONCEPTIONS REVEALED, page-1547

https://www.dailymail.co.uk/health/article-9495727/Researchers-studying-women-report-changes-periods-taking-COVID-vaccine.html

Scientists launch study to find out if COVID-19 vaccines are causing period changes after hundreds of women notice irregularities

• Dr Kathryn Clancy and Dr Katherine Lee said they both experienced abnormal periods after getting the COVID-19 vaccine
• When they described their experiences on Twitter, hundreds of women replied that their menstrual cycles were also abnormal following the shot
• Clancy and Lee have now launched a study, including a survey in which women can document their menstrual experiences after vaccination
• As of Monday, more than 25,000 women have completed the questionnaire