Your best options is to wait until the IRS has processed your return and sent your refund (if any). Then wait two to three months to see if you receive a letter from the IRS revising your original return.
If you owe more tax, the IRS will recalculate the tax you owe and send you a bill. This is a fairly easy process and a lot less hassle than preparing an amended return, which has to be printed and mailed (no e-file).
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