Thousands of women reporting menstrual problems post-Covid vaccination – what to look for

The Medicines and Healthcare products Regulatory Agency (MHRA) has received thousands of reports linking the current coronavirus vaccines to a range of menstrual changes. Namely, 4,000 women have suffered period problems after getting their Covid jab. “Heavier than usual” bleeding or a delayed period are of the menstrual issues commonly reported in women aged between 30 and 49.

MHRA chief executive Dr June Raine said: “Alongside the independent experts of the Commission on Human Medicines and members of its Medicines for Women’s Health Expert Advisory Group, we have reviewed reports of menstrual disorders and unexpected vaginal bleeding, suspected as adverse reactions to vaccination.

“The current evidence does not suggest an increased risk, following vaccination, with the UK’s three Covid vaccines.

“The number of reports is low in relation to the number of women who have had the vaccine to date and the background rate of menstrual disorders generally.

“We continue to closely monitor these reports for potential signals.”

How to respond to period problems – general tips

If problems with your periods are affecting your life, there’s help and support available.

“Before you see your GP about period problems, it can be useful to keep a diary of your symptoms throughout the menstrual cycle,” advises the NHS.

“This can give your doctor a detailed idea of what happens, and when, during your cycle.”

Treatments for heavy periods can include:

  • Some types of hormonal contraception, such as the intrauterine system (IUS) or the contraceptive pill
  • Tranexamic acid tablets
  • Anti-inflammatory painkillers, such as ibuprofen or mefenamic acid
  • Progestogen tablets
  • Surgery (depending on the cause).

Can you have a Covid vaccine if you’re pregnant?

Current UK public health guidelines state you can have a COVID-19 vaccine if:

  • You’re pregnant or think you might be
  • You’re breastfeeding
  • You’re trying for a baby.

There is no indication that a vaccine can give you or your baby COVID-19.

According to the NHS, you’ll be invited to have the vaccine when your age group are offered it or earlier if you have a health condition or other reason that means you’re eligible.

“If you’re breastfeeding, you can have any of the COVID-19 vaccines,” says the health body.


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