I filed taxes on TurboTax but I did not mail them

Unless you efiled.  Did you try to efile or did you want to mail it?  If your account says Printed or Ready to Mail and you haven't mailed it then you haven't filed yet.

Did you go all the way through the File tab, through the 3 steps and hit the big orange Transmit Returns Now button?

You can check your efile status here     

https://turbotax.intuit.com/tax-tools/efile-status-lookup/   

When you efile you get back 2 emails.  The first email only confirms the transmission.  The second email says if the IRS (or state) Accepted or Rejected your efile.

When you log into your account you should also see the status and if it was Accepted or Rejected, Started, Printed, Ready to Mail, etc.  What does it say?