What did you confirm? If you efiled on April 15 then you do not also mail your tax return. Was your efile Accepted? If you have a tax due the payment was due on April 15 also. Did you select to have it deducted from your bank account or were you suppose to mail a check?
How to check your efile status
https://ttlc.intuit.com/turbotax-support/en-us/help-article/electronic-filing/check-e-file-status/L9XhHDPtD_US_en_US
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. And check your spam folder for them.
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?