Did you mail federal and state?  Turbo Tax will always say Ready to Mail.  They don't know when or if you actually mailed them.  And did you mail federal in a separate envelope?  Federal and state go to different places.  Some people have been mailing both in the same envelope to the state.

Then only the IRS can tell you.  IRS Where's my refund https://www.irs.gov/refunds/

Make sure you are using the refund amount from your actual federal tax return and not the combined amount Turbo Tax showed you at the end.  That was for federal and state combined.