Can’t find previous threads - what was the outcome surrounding discussions about the vaccines affecting periods?

[ThornAmongstRoses]

After my first vaccine my periods continued as normal, but after having my second vaccine a month ago my period hasn’t arrived.

My period is never late.....but now it’s four days after it was due to arrive and absolutely nothing! Not even a twinge of a pains whereas I normally I get cramps about 24-48 hours before my period arrives.

I 100% am not pregnant.

Supposedly there's no possible mechanism but which this could be the case but there are so, so many reports. From my own research when trying to get pregnant years ago and having unpredictable periods, I know very well that any, many, kinds of medical 'shock' can affect periods through stress and resulting hormonal imbalance especially if they occur in the first half of the cycle and disrupt ovulation.

There is no scientific outcome, everything is just anecdotal.

Here's one.

Has the covid jab messed with your menstrual cycle?

link

Caroline Criado Perez has something to say about it

How can there be no possible mechanism when it’s a disease that involves blood clotting? This kind of thing makes me lose trust in the medical establishment.
I had my heaviest period yet immediately after my AZ jab and the one after that lasted 13 days which is twice as long as normal. I am peri menopausal so it could easily be that, but not all the women it’s happening to are!