Menstrual irregularities (NATURE study): “Web and social media searches highlight menstrual irregularities as a global concern in COVID-19 vaccinations” (Katz & Eran); very strong correlation Spearman

Seems that those who got vaccinated got period menstrual issues and wanted to desperately search on it. Searching the web tracked with vaccine administration.
Key reported finding:

‘The relative volume of searches such as “Covid vaccine menstrual irregularities”, “Covid vaccine menstrual period”, “Pfizer vaccine menstruation”, and “Moderna vaccine menstruation” was each significantly correlated with vaccination rates (Spearman r = 0.42–0.88, P = 4.33 × 10–34–1.55 × 10–5), and significantly different before and after the introduction of Covid vaccines (Mann–Whitney P = 2.00 × 10–21–7.10 × 10–20).’
Key graph:

‘This study finds a surge of Google searches related to COVID vaccine and the menstrual cycle following the initiation of national and state-level COVID-19 vaccination drives. While it may suggest that women of reproductive age vaccinated for COVID-19 might have experienced menstrual irregularities, it could also reflect the mere concerns of those not yet vaccinated.
SOURCE:
Web and social media searches highlight menstrual irregularities as a global concern in COVID-19 vaccinations
Researchers “used Google Trends to examine the relative volume of searches for “Covid vaccine menstrual irregularities”, “Covid vaccine menstruation”, “Covid vaccine menstrual period”, “vaccine and period”, “Pfizer vaccine menstruation”, and “Moderna vaccine menstruation” worldwide, in English speaking countries and across the US between January 2020 and November 2021.”