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Signs of a severe allergic reaction include trouble breathing, hives breaking out on the skin, swelling of the face and throat area, a fast heartbeat, or feeling like you might pass out

I continuously iced my arms

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Common side effects may include: Pain, redness, or swelling at the injection site (for injectable vaccines) Nausea or mild abdominal discomfort (for oral vaccines) Headache or fatigue Severe allergic reactions are rare, but immediate medical attention is required if you experience symptoms such as difficulty breathing, swelling of the face or throat, or hives