Told y'all. And no, I don't hate to say so...
NIH orders $1.67M study on how COVID-19 vaccine impacts menstrual cycle.
No one bothered to do any study BEFORE...Just Brilliant...

NIH to study how COVID-19 vaccine impacts menstrual cycle
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nypost.com

NIH to study how COVID-19 vaccine impacts menstrual cycle

The National Institutes of Health will spend $1.67 million to investigate a possible hidden link between the COVID-19 vaccine and reproductive health as some report irregular periods following vaccination.