Can the COVID-19 vaccine affect menstrual cycle?

Women who received COVID-19 vaccines had a less than one-day increase in the length of their menstrual cycles around the time of their doses. The findings suggest that women may have a slightly longer menstrual cycle after COVID-19 vaccination, but the change is temporary and within the range of normal variation.
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Does the COVID-19 vaccine throw off your period?


After vaccination, participants in the study noticed an increase in the length of their menstrual cycles by about one day, on average. In subsequent cycles, however, the length of their menstrual cycles decreased by a day—confirming that the vaccines have little effect on menstrual cycles.

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Can COVID-19 affect my period?


COVID can also cause changes. It's also been suggested that in the face of severe illness, such as COVID, the body temporarily reduces ovulation (which can impact menstrual bleeding) to redirect energy away from reproduction and towards fighting off infection.

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Why can my period be different after the COVID-19 vaccine?


The lining of the uterus — called the endometrium, which sheds each month — has also been linked to the immune system. It's possible that the vaccine or its effect on the immune system and/or hormones is somehow affecting the endometrium, leading to period irregularities.

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What are some of the side effects of the COVID-19 vaccine in women?


COVID-19 vaccines can cause swelling in your lymph nodes or arm. Women who have been vaccinated against COVID-19 can develop enlarged underarm lymph nodes on the same side where they had the shot. It's more common for this to happen after boosters and additional doses.

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What are the common side effects of the COVID-19 vaccine?

The most commonly reported side effects were pain at the injection site, tiredness, headache, muscle pain, chills, joint pain, and fever.
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What are the possible side effects of the Moderna COVID-19 vaccine?


Possible side effects: Pain, redness, swelling in the arm where the shot was administered; tiredness, headache, muscle pain, chills, fever, nausea throughout the rest of the body. If any of these side effects occur, they should go away in a few days.

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What are the common side effects of the Pfizer-BioNTech COVID-19 vaccine?


Commonly reported side effects in the clinical trial included injection site pain (sore arm), redness and swelling, fatigue, headache, muscle and/or joint pain, chills, fever, swollen lymph nodes, nausea and decreased appetite.

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Can I get pregnant after receiving the COVID-19 vaccine?

Many people have become pregnant after receiving a COVID-19 vaccine, including some who got vaccinated during COVID-19 vaccine clinical trials.
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What are the possible side effects of the Moderna and Pfizer COVID-19 vaccines?


Possible side effects: Pain, redness, or swelling at the site where the shot was administered, and/or tiredness, headache, muscle pain, chills, fever, or nausea throughout the rest of the body. If these side effects occur, they should go away in a few days. A few side effects are serious, but rare.

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Can you still test positive after recovering from COVID-19?

According to the Centers for Disease Control and Prevention, some people who contract COVID-19 can have detectable virus for up to three months, but that doesn't mean they are contagious. When it comes to testing, however, the PCR tests are more likely to continue picking up the virus following infection.
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How long does COVID-19 rebound usually last?

How long will a rebound last? In the cases that have been described, rebound symptoms improved and/or positive tests became negative within 3 days for most people.
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How long does COVID-19 rebound last?

So far there have been no reports of severe illness in those who have experienced covid rebound, and most people seem to recover and stop testing positive around three days later without needing additional covid-19 treatment.
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Can you contract COVID-19 through sexual intercourse?

Although there is currently no evidence that the COVID-19 virus transmits through semen or vaginal fluids, it has been detected in the semen of people recovering from COVID-19. We would thus recommend avoiding any close contact, especially very intimate contact like unprotected sex, with someone with active COVID-19 to minimize the risk of transmission
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How does COVID-19 affect the blood?

Some people with COVID-19 develop abnormal blood clots, including in the smallest blood vessels. The clots may also form in multiple places in the body, including in the lungs. This unusual clotting may cause different complications, including organ damage, heart attack and stroke.
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What can you tell us about pregnancy after receiving the Pfizer COVID-19 shot?


What can you tell us about that? Results from published studies suggest there is no increased risk of first trimester pregnancy loss for patients who receive any of the three vaccines that currently have emergency use authorization: Pfizer, Moderna and Johnson & Johnson-Janssen.

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Is the COVID-19 vaccine safe for pregnancy?

Vaccination is recommended for pregnant women to prevent COVID-19, including severe illness and death. COVID-19 vaccination is safe and effective when administered during pregnancy
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Can COVID-19 affect pregnancy?


People who have COVID-19 during pregnancy are also at increased risk for complications that can affect their pregnancy and developing baby. For example, COVID-19 during pregnancy increases the risk of delivering a preterm (earlier than 37 weeks) and or stillborn infant.

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Is it normal to feel sick after having the COVID-19 vaccine?

It is normal to feel sick after getting a COVID-19 vaccine.
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Are there any safety concerns concerning mRNA technology of the Pfizer-BioNTech COVID-19 Vaccine?

FDA does not have specific safety concerns with a vaccine that utilizes this technology.

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Is the Pfizer COVID-19 vaccine safe?


Pfizer-BioNTech COVID-19 Vaccine Ingredients. All COVID-19 vaccine ingredients are safe. Nearly all of the ingredients in COVID-19 vaccines are ingredients found in many foods – fats, sugars, and salts. The Pfizer-BioNTech COVID-19 vaccine (COMIRNATY) also contains a harmless piece of messenger RNA (mRNA).

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Has anyone had severe reactions to the Moderna COVID-19 vaccine?


Monitoring of the Moderna COVID-19 vaccine has found 10 cases of anaphylaxis after the administration of 4,041,396 first doses of the Moderna COVID-19 vaccine. In 9 out of these 10 cases of anaphylaxis, the recipient of the vaccine had onset of symptoms within 30 min of administration.

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Why do people who had COVID-19 have a strong reaction to the vaccine?


The next time you encounter the pathogen, these responses will kick in faster and stronger, because your immune system is already primed to recognise and respond to it. This is why people who have already recovered from COVID-19 may experience more of these mild reactions.

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What is a COVID-19 rebound?

COVID-19 rebound is when people with COVID-19 get better, then begin to get symptoms 2-8 days after they have recovered. They may also test positive again. There have been reports of this occurring with patients who were treated with Paxlovid.
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What is COVID-19 rebound?

COVID-19 rebound is when people with COVID-19 get better, then begin to get symptoms 2-8 days after they have recovered. They may also test positive again.
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