It is common to have side effects one or three days after getting the vaccine. Common side effects are tiredness, muscle pain, pain in your arm where you got your shot, fever, headache, joint pain, chills, nausea, or vomiting. If your symptoms don't go away, contact your doctor or clinic.
You should wait 15 to 30 minutes before leaving the vaccine site so your vaccine provider can help you if you do have an allergic reaction or other side effects. While you wait, you can sign up for vsafe to report any side effects: vsafe.cdc.gov.
You or your vaccine provider can also report side effects to the Vaccine Adverse Event Reporting System (VAERS): vaers.hhs.gov/reportevent.html.
Call 911 if you have an allergic reaction after leaving the clinic. Signs of an allergic reaction include: difficulty breathing, swelling of your face and throat, fast heartbeat, a bad rash all over your body, dizziness, and weakness.