Amended returns must be filed by printing, signing and mailing a Form 1040X. It takes about 3 months for the IRS to process an amended return. If you are getting a refund from the amended return they mail you a check
Wait about 3 weeks from mailing and you can check the status of your amended return:
https://www.irs.gov/Filing/Individuals/Amended-Returns-(Form-1040-X)/Wheres-My-Amended-Return-1
https://www.irs.gov/filing/individuals/amended-returns-form-1040-x/amended-return-frequently-asked-questions