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I have a swollen lymph node under my clavicle 10 days after receiving the Pfizer COVID vaccine. Should I be concerned?

It is not uncommon to develop a swollen lymph node under the clavicle after receiving the Pfizer COVID vaccine. This is a common side effect that typically resolves on its own. The vaccine stimulates your immune system, which can lead to the enlargement of lymph nodes. This side effect is more common in individuals who have previously had COVID but can also occur in those who have not had the virus.