Pat O'Brien, of the Royal College of Obstetrics and Gynecology, said period changes have been mild and shouldn't deter women from a COVID-19 vaccine.
Adolescents in Pfizer's clinical trials seemed to develop side effects more frequently than adults did.
In Pfizer's case, the shot also seems to yield fewer instances of side effects like headache, fatigue, and muscle pain than it did in clinical trials.
I stocked up on soup, salad, and oats in anticipation of fever, chills, and nausea. Two dietitians told me what they approved of, and what they'd add.
Researchers found that vaccine side effects like headaches and fatigue were reported less frequently in the real world than in clinical trials.
In trials of the Moderna and Pfizer vaccines, roughly half of participants did not experience side effects. The shots were still highly effective.
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Minimize discomfort by moving your arm or taking hot showers. Use cold washcloths or ice instead of Advil.
The CDC still might not have enough data to evaluate a blood clot link by its Friday meeting, two senior health officials told Politico.
The CDC is investigating a possible association between Johnson & Johnson's shot and six cases of rare blood clots.
The rate of blood clots is higher among women on birth-control pills than the rate associated with J&J's vaccine. But comparing them isn't so simple.
US regulators recommended an immediate pause of Johnson & Johnson's vaccine rollout on Tuesday due to six rare blood-clot cases.
Adults over 65 generally have weaker immune systems, and women mount a stronger immune response to the vaccine in general.
Side effects are generally more pronounced among women and younger adults, especially after their second dose - unless they've had COVID-19 before.
Although side effects were less common in the J&J trial compared to other vaccines, some recipients experienced discomfort after their shots.
The brothers were motivated to join Moderna's trial because they didn't want to spread the virus to their mom, who has an autoimmune condition.
If the vaccine is found to be safe and effective in US trials, the FDA could authorize it for emergency use next month.