Where is my Amended Return? Received 03March16; Adjusted: 01April16, Completed: 22April16. Still no check in the mail.. Should I be concerned? Or have more patience..

[SweetieJean]

What is happening when Where's My Amended Return? shows the status is: Completed?
This means your Form 1040X- Amended Tax Return has completed processing resulting in a refund, balance due, or no tax change. This timeframe also means all correspondence related to the processing of your amended tax return has been mailed to you.

https://www.irs.gov/filing/individuals/amended-returns-form-1040-x-/amended-return-frequently-asked-...

Try calling the IRS