It depends. If your refund still shows the original amount you may not have completed the amend process.
If you amend a return, you still have to file it. Do you remember either e-filing or mailing your amended return? If you didn't, then you prepared, but did not file an amendment.
You can check the status of your amended return at Where's My Amended Return?
For instructions see How to amend (change or correct) a return you've already filed.
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