How can I tell if my taxes were filed. I paid on April 7 and have a print out but I don't see a confirmation for my federal only my state.

If you have confirmation for state then federal was filed.  You can not file state unless the federal was first filed and Accepted.    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?

UPDATE, that lookup tool doesn't work anymore so 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?uid=lvriwl8j