So far it just seems to be anecdotal. You can add my personal experience to your anecdote pile though: I am a pretty lucky woman in that I have had a very regular period, 26-27 days between, 3-4 days long consistently for the past 30 years or so (except for 5 years I was on birth control). I shook hands with someone that later said they just got the vaccine and that night had horrible cramps and started a period that lasted 6 days, only 11 days after my last period! I don't know where all that blood came from so soon after my last one. And I've been crazy tired for the past month or so, no fever, but I feel like I'm fighting off a bug.
Could by psychosomatic, but it sure didn't/doesn't feel like it
I've always been pretty regular myself (always on the 14th, always moderate), but the cycle before last came two weeks early, was moderate and painful (lasted 5 days). The next one came a week before the last one in which was early (I am at three weeks off on my normal start time by this point,) and it lasted about 4 days, and was substantially lighter than usual it was 2 days of light/moderate and two days of spotting. I have refused the vaccination for obvious reasons, and I do not go out much. My boss is the only person I know who got the vax, and he got the jab about 3 months ago. The oddities with my period started about two months ago . I thought it might have all been in my head, but I am seeing more and more posts like this. Normally, I am too reserved to talk about this sort of thing, but I am getting very curious to know more about what others are experiencing. I know it's not likely menopause because I am in my early 30s.
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