Yes, swelling can be related to the vaccine even after 3 weeks. It is a possible immune response that can cause a swollen lymph node in the armpit. This should resolve gradually over time. It is important to monitor for any other symptoms and keep a close eye on the situation. If the swelling gets worse or other symptoms appear, do not hesitate to seek advice. You can also reach out to our team for support over the phone or in-person. Have a great day!
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