Period late after Pfizer vaccine

[MakkaPakka84]

Period now 5 days late after the Pfizer vaccine, anyone else had the same? I have heard of periods coming early, not so much of missed periods.

I was sure it would come last week as I had a lot of cramping/PMS signs, but they have all disappeared since. Took a cheapie pregnancy test and it's negative so it must be the vaccine I guess...

Lots of people are reporting missed periods too. There are several threads about it. These are a couple of the most recent:
www.mumsnet.com/Talk/coronavirus/4286506-women-are-just-imagining-problem-periods-after-the-vaccine
www.mumsnet.com/Talk/coronavirus/4275613-4000-women-report-period-problems-following-vaccine

Remember to report it to the Yellow Card scheme and the Zoe app if you use it so that a clearer picture of vaccine side effects can emerge.

I had the moderna vaccine and missed a whole period 5 weeks without one ! Now back to 28 days as normal, very strange !

Yep v late after my second pfizer, if DH hadn't have had the snip I'd have been doing a pregnancy test. Very unusual to have been so late for me, and I find it frustrating that this is just being written off because it's a woman's problem. If it were men having affects like this I think it would be more thoroughly looked into.

Same for me, had Pfizer vaccine. When it finally arrived it was much lighter than normal, and the 2 I have had since have been the same. Have a search on here I have seen a couple of over threads on this so seems quiet common.

If you use the Zoe App there's no option to record menstrual irregularities unless you select "I'm not feeling quite right" and click through until you can write it in the "other" box.

I had Pfizer 24 days ago and I'm now a week late.

No on time and normal period for me

This is my view:

We attribute cause where we think it should be. As a woman, our periods, over the 40 years we have them, change. Regular, irregular, heavy, light.

Like the 'Karma Chameleon', 😂, it comes and goes.

I suspect if many of us had fanatically documented our periods, month after month, year after year, we'd find other anomalies. But would have had nothing to 'hang' the changes on. So we just don't see it.

Utterly not immediately relatable; but I went to chuck out 5 years' worth of work diaries, used only, ever, to record my weekend work/overtime.

I was actually shocked to realise how many weekends I'd worked over those years. If you asked me, I'd've said 1:4. It was more like 1:2.5.

Small, stupid comparison- but proof that we can so fool ourselves.

Obviously, you are pregnant with the alien baby that Bill Gates has smuggled into your system using the vaccine!

Yes, I'm on cycle day 46 no period at all in June.
I had my 1st Pfizer dose 15th May, period was due 16th but arrived 20th, didn't think too much of that but as I said, now into July and had nothing for June.

Got my second dose booked for a couple of weeks time, right around when I'd usually be due, so will see what happens!

I have been tracking my cycles in detail for years (infertility and IVF) so I know my cycles inside out!

It’s not uncommon to have a temporary delay in periods after the vaccine. It corrects itself.

@Miljea

I suspect if many of us had fanatically documented our periods, month after month, year after year, we'd find other anomalies. But would have had nothing to 'hang' the changes on. So we just don't see it.

Actually many women do track periods every single month. I use a Fitbit app to do this, logging my symptoms each month plus the heaviness of the flow and duration. It's really useful to know exactly when I'm due on and when I can expect I'll need my prescription medication to deal with cramping.

I've been using the Fitbit app for approx 3 years now so have a very accurate log of what's normal for me. Prior to that I used a different period tracking app.

Getting a Pfizer vaccination is the only thing that's completely messed up my cycle, there are no other changes in my life.

[quote BringBackThinEyebrows]@Miljea

I suspect if many of us had fanatically documented our periods, month after month, year after year, we'd find other anomalies. But would have had nothing to 'hang' the changes on. So we just don't see it.

Actually many women do track periods every single month. I use a Fitbit app to do this, logging my symptoms each month plus the heaviness of the flow and duration. It's really useful to know exactly when I'm due on and when I can expect I'll need my prescription medication to deal with cramping.

I've been using the Fitbit app for approx 3 years now so have a very accurate log of what's normal for me. Prior to that I used a different period tracking app.

Getting a Pfizer vaccination is the only thing that's completely messed up my cycle, there are no other changes in my life.[/quote]
So do I. I'm getting a bit fucked off with being told it's in my head we all know our periods well enough to notice a change. To be told otherwise is bloody irritating.

There’s been about 4000 cases of changes in the menstral cycle reported to the MHRA. It generally lasts for one month, but can be two. It has happened with different vaccines, not just the Pfizer one. It shouldn’t stop anyone getting vaccinated.

Another one who has many, many years of menstrual cycle data.

This month is abnormal for me - now 1 week late.

I know from cycle tracking over the last 20 yearsthat I do have months where I skip a period or have a very long cycle, but it's usually linked to stress or illness so I don't know why it would be surprising that it could be linked to vaccination as well.

@Miljea I track my periods. I like to know my cycle and to note my moods. Do not assume people don’t know their own bodies.

@Spudina

There’s been about 4000 cases of changes in the menstral cycle reported to the MHRA. It generally lasts for one month, but can be two. It has happened with different vaccines, not just the Pfizer one. It shouldn’t stop anyone getting vaccinated.

Yes, about 4,000 reports were made to the MHRA by 17th May 2021.

Anyone experiencing changes to their period since having the vaccine should report it here.

Do you have a link to the data for how long these side effects last?

I suspect if many of us had fanatically documented our periods, month after month, year after year, we'd find other anomalies. But would have had nothing to 'hang' the changes on. So we just don't see it.

Yes, but we're not just talking about periods a couple of days late here, or a little bit heavier or lighter or more painful. We're talking about perimenopausal women who haven't had a period in months bleeding again. Or women bleeding so heavily they're drenching night pads in a couple of hours. Women having horrendous period pain when they never did before. Women not having a period in months when they were regular before. I'm not prepared to accept that these things were going on before and women just "didn't see it".

@Miljea

This is my view:

We attribute cause where we think it should be. As a woman, our periods, over the 40 years we have them, change. Regular, irregular, heavy, light.

Like the 'Karma Chameleon', 😂, it comes and goes.

I suspect if many of us had fanatically documented our periods, month after month, year after year, we'd find other anomalies. But would have had nothing to 'hang' the changes on. So we just don't see it.

Utterly not immediately relatable; but I went to chuck out 5 years' worth of work diaries, used only, ever, to record my weekend work/overtime.

I was actually shocked to realise how many weekends I'd worked over those years. If you asked me, I'd've said 1:4. It was more like 1:2.5.

Small, stupid comparison- but proof that we can so fool ourselves.

@Miljea - I have tracked my periods closely for 25 years, as I had secondary amenorrhoea for 3 years (no known cause) before my periods started up again, so I have taken a particular, long term interest in what may or may not affect my periods. Your response may help you psychologically, but I personally find it phenomenally irritating. Just because the medical profession has bugger all interest in the causes of temporary changes to women’s menstrual cycles, this doesn’t mean there are no causes. If the medical profession took a bit more interest, it might have been able to be a bit more helpful when my body took a random 3-year break.

Loads of I know has had some sort of issues with both Pfizer and AZ. Colleagues range from late periods to heavy periods where normally it's light to first period in 2 years but according to the powers that be it's all coincidence.

I've had both jabs (Oxford AZ)
After first vaccine my period was 2 weeks early,
Got second dose early June and period currently 3 weeks late

First dose didn’t affect it but after my 2nd dose I was 5 days late. The following month I was back to normal!

This is worrying. Seems more and more women are reporting these issues.

The thing is maybe it's not worrying. If viruses can affect your periods (never happened to me and I've had plenty of viruses of varying severity but I'll accept it can) then a vaccine could well have the same effect. What's worrying is that the people who's job it is to investigate this stuff are essentially trying to gaslight us in to believing it's just a coincidence, that we're looking for the link, that it's all in our heads, despite the fact most women these days use teachers if some sort and know very well the normal patterns for them. They could t be bothered to look in to women's reproductive health before and they can't be bothered now. I'm sure if it was commonly causing erectile dysfunction in men it would be another matter!

*trackers not teachers

After my first Pfizer my usual 27 day cycle was 54 days....so it was like I completely skipped a period. Next period due about the same time as my second jab - be interesting to see if it turns up on time.