I'm 51 and last had a period more than 2 years ago. After my Covid vaccine in Feb, my periods 'started again'.
It looks like there are quite a few post-menopausal women who have had the same, and some non-menopausal women who've had their menstrual cycles go awry.
www.redonline.co.uk/health-self/self/a36457082/post-menopausal-women-bleeding-covid-vaccine/
If this applies to you, please do contact your GP for advise and/or to register your experience.
It's not necessarily a problem, but women do
Often accept situations that could do with being explored in more detail, so please do make your experience count if you can.