Changes to periods or unexpected vaginal bleeding are not listed as common side effects of COVID-19 vaccination, she writes. Yet more than 30,000 such reports had been made to the UK Medicines and Healthcare Products Regulatory Agency (MHRA) surveillance scheme for adverse drug reactions by 2 September.

However, most people find that their period returns to normal the following cycle and, importantly, there is no evidence that COVID-19 vaccination adversely affects fertility.

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