Pending simply means that your return has been submitted and hasn't been Accepted or Rejected the IRS (return is still in transit or the IRS hasn’t processed it yet). The state return will show Pending until your federal return has been accepted.
You can visit our e-file status lookup tool to get your current status (Accepted, Rejected, or Pending)
Please read the TurboTax Faq regarding Pending Returns:
https://ttlc.intuit.com/replies/4193097