After you file

From 2017?  When did you file your 2017 tax return?  Was it filed back in 2018 or did you file late?  If you filed in 2018 why did you wait until now to start asking?  Was your 2017 return accepted?  What does it say in your online account for the 2017 return?  Does it say "accepted" "rejected" "ready to mail" or "printed?"  If it says anything other than "accepted" it was not filed at all--unless YOU put it in an envelope and took it to a mailbox yourself.

No one at TurboTax knows what happened to your 2017 refund.  TurboTax does not get any information about your refund after you file the return.

You can call the IRS to ask:

To call the IRS:IRS:  800-829-1040  hours 7 AM - 7 PM local time Mon-Fri

Listen to each menu before making the selection.

First choose your language. Press 1 for English.

Then do NOT choose the first choice re: "Refund", or it will send you to an automated phone line.

Instead, press 2 for "personal income tax".

Then press 1 for "form, tax history, or payment".  

Then press 3 "for all other questions."

Then press 2 "for all other questions."  It should then transfer you to an agent.