What forms? If you efile there is nothing to send in except your payment if you owe. Was it 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.