There were lots of reports of women experiencing weirdness with their menstrual cycles following covid vaccinations (myself included), and as I recall women were urged to report it if they experienced this - however, according to this news article this anomaly hasn't been investigated at all. Why bother asking women to report this if it isn't going to be looked into? I'm currently unsure as to whether or not to let my 12 year old DD have the vaccine because of this reason - she has yet to start her periods and I'm worried about what the vaccine might do to her developing reproductive system. The person in the news article who is calling for this to be investigated is a reproductive specialist - I am genuinely surprised that it isn't being looked into already:
uk.news.yahoo.com/changes-menstrual-cycle-covid-vaccination-014530233.html