The Food and Drug Administration and the Centers for Disease Control and Prevention say individuals who received the Johnson & Johnson vaccine should be on the lookout for specific symptoms.

Those include severe headache, abdominal pain, leg pain and shortness of breath.

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Officials say if you have experienced any of those within three weeks of getting the shot, you should contact your doctor for guidance.

However, officials stress that adverse effects from the Johnson & Johnson vaccine are " extremely rare."

Dr. Anthony Fauci says you should not be concerned if it's been more than a month since you got the Johnson & Johnson shot. He says the time frame for side effect symptoms to appear is six to 13 days after getting vaccinated.