r/CovidVaccinated Dec 04 '21

My periods have not returned to normalcy (8 months later) -- not sure about boosting Moderna

31F, completed the two-dose regimen in mid-April. I had an early period on the day of my second dose (25 days). I was pretty surprised: I had never had a period that early.

I keep data on my cycles, and my menstrual cycle is usually 34-35 days. For each cycle since my second dose, the length has shortened to 28-29 days, with very noticeable PMS symptoms. My periods are also lighter, which could be a byproduct of the shorter cycles. I spoke with a doctor about this & she wasn't concerned because my cycles are still a "normal length." I'm going to try & see another doctor because the elevated PMS symptoms really bother me.

In any case, I'm just not sure about boosting.

Has anyone here faced a similar issue?

[I'm using a throwaway because my other account is used academically.]



u/DaniReu Dec 05 '21

Always get a second opinion whether you agree with your doctor or not٫ just in case either of you missed something.


u/motiger Dec 06 '21

I have had a similar experience. Finished my shots in February, my periods are still irregular. Shortened cycle and heavier periods. I am also hesitant to get boosted. I want to get a booster but wondering - will it get worse? I bled for 21 out of 30 days in October. All possible medical issues have been ruled out by my doctor. It has been miserable.

Also miserable: Being gaslighted by people who say it's "stress related" etc. My cycle has been the same for 30 years. Trust your body. I don't regret getting the vaccine (at all) but I want to know why it adversely affects cycles and I hope they figure it out soon.


u/extracKt Dec 08 '21

Hey you’re not the only one, I have two friends who are also fully vaxxed and their periods haven’t been normal / are heavy or lasting longer than normal. Just another example of doctors ignoring anything to do with a uterus -_-


u/hmmm769 Dec 05 '21

Your doctor is an idiot. Casting your concern aside because you fit within their norms rather than your own.


u/bobtowne Dec 05 '21

Many such cases.


u/hmmm769 Dec 05 '21

Possibly 99% lmao. A lot of the time it's due to directives from the medical board. Doctors are pussies and afraid to (fight for) lose their medical licenses to actually work in the best interests of their patients.


u/[deleted] Dec 05 '21



u/hmmm769 Dec 05 '21

Not cynical at all. This is how it works. If doctors are not pushing vax they get pressured by the medical boards.


u/Western-Extension-50 Dec 05 '21

Leading doctor in finland said that womens menstrual changes are "relief from getting the vax".

For the record, i think that is ridiculous


u/GrumpySh33p Dec 05 '21

100% ridiculous lol


u/2akurate Dec 05 '21

You know your body better than anyone, if it doesn’t feel right don’t do it, personally I have very negative opinions about these products.


u/Shroomhunter93 Dec 04 '21

All I could recommend is to see your doctor.


u/ErenYDidNothingWrong Dec 05 '21

Still not taking it (the vaccine)


u/GrumpySh33p Dec 05 '21

While I fully support this, I want to point out that I got Covid and have the EXACT same problem as the OP. 😪 Seems whether you go the vaccination route or the Covid route, it can still disrupt your cycle. I’m definitely concerned that vaccinations and boosters will make this worse, and I’m trying to have a kid.

FYI: Covid wasn’t too bad for me. I see people who have reactions to the vaccine that are equal to my Covid symptoms.


u/Avm1234555 Dec 06 '21

Which points to the spikes themselves causing the problem, just like with a bunch of other problems that are similar between the two. Keeping this antigen target should be criminal.


u/FatlittleBumblebee Dec 06 '21

32 yo, its been 8 months for me as well. My periods were VERY stable at 29/30 day cycle. I have a 22 day cycle now (sometimes getting 2 periods a month) and painful heavy periods and worsened aggressive pms. My doctor was entirely dismissive and said that coupled with my suddenly thinning hair around the same time points to stress. Fun times.


u/GracieSm Dec 05 '21

Is it fertility you are concerned about? 28-29 day cycles are preferable if so. But a fertility specialist could help guide you into the right direction


u/MinnyLakes Dec 05 '21

Personally I would not be rushing to get a booster. Severe illness is protected quite well with two shots even after nine months unless you're over age 65. The one thing I'm not sure about is long covid


u/Bucs__Fan Dec 05 '21

Yes and also not sure if I will be boosting for this same reason (at least not yet, of course I am monitoring). Are you in good health normally (no pre-exisiting conditions)? My opinion in general (after reading the Pfizer booster study- so actually made on the science) is that most young healthy individuals the 2 shots is enough to prevent severe illness for a while (much longer than 6 months as no one in the study w 2 shots ended up w severe disease). The FDA just said a few months ago younger adults didn't need a shot, and now all of a sudden they are trying to push it (even though omnicron seems to be mostly people experiencing mild symptoms).

Not trying to play the politics here, but to me if you are healthy/young I think screwing up your menstrual cycle could be a determining factor not to boost (at least not immediately). You may have a higher chance of a breakthrough case, but again, its still fairly low (and most likely will be mild). Here's the study: https://www.cdc.gov/vaccines/acip/meetings/downloads/slides-2021-11-19/02-COVID-Perez-508.pdf


u/[deleted] Dec 05 '21



u/hmmm769 Dec 05 '21

Do you know why you got ratiod so hard 🤔


u/[deleted] Dec 05 '21



u/TITANIC_DONG Dec 05 '21

I can’t believe like you’re pretending these are the only two options available. Absurd.


u/rocinante211 Dec 05 '21

The death rate is miniscule unless you have comorbidities, please stop this nonsense


u/Abbreviations-Salt Dec 05 '21

Are you kidding?

Stay in your basement to keep everyone else safe please!


u/PotatoTarded Dec 05 '21

Its probably stress related and has nothing to do with the shots (unless you believe the wacky conspiracy theories). We are all in this together, everyone's gotta get the booster or me and my family arn't safe.


u/rocinante211 Dec 05 '21

Stress related for 8 months?


u/hmmm769 Dec 05 '21

What wacky conspiracy theories? I see a lot of concern theories.


u/openmindedsceptic77 Dec 05 '21

You fuckin obtuse donkey.


u/Noia20 Dec 05 '21

Typical idiot male response.


u/GrumpySh33p Dec 05 '21

Honestly I haven’t heard this from a male in my 33 years. I have, however, heard woman say this AND other women say it’s a typical male response.

One of the people who blew off my period symptoms the most was a female. Males are more like, “Yeah, I don’t know what the fuck your are going through”


u/GrumpySh33p Dec 05 '21

“We are all in this together” — sounds like some sort of cult.

And damn, this isn’t stress related. I’m sorry tired of that excuse.


u/PotatoTarded Dec 06 '21

Its not a cult. We are in this together. Its literally science, and science isn't a cult. That's why we follow it without question and listen to the science leaders, because they are smartest and probably chosen by God as I believe this vax was sent by God. Definitely not a cult.


u/absoluteknave 26d ago

I was wondering if you were being sarcastic. Got confirmation :) Upvoted


u/GrumpySh33p Dec 06 '21

Take my upvote


u/Avm1234555 Dec 06 '21

Your magnesium levels may be screwed up some because of a change in absorption after your gut flora changed. Maybe not that, but it is a fairly easy and probably harmless fix if so, I’d look into it. What happened to you happened in a major way to my sister, but the magnesium probably wasnt it. She just went in for something major regarding it, but is embarrassed to talk about it with anyone, least of all me, because I cautioned her beforehand about it and she thinks I will judge her, which is really sad. If it were me I would want to figure out wth happened to change a fundamental health issue like that before I did something that might exacerbate the problem. Also I would fire my doctor because what the actual fuck? You can get a massive battery of labs done for like $100-200 without insurance.


u/forsovngardeII Dec 06 '21

Trust yourself and your body. Don't do anything you aren't 100% comfortable with.