No, you can't refile your return if it is Pending. You should sign in to your TurboTax account and make sure that your return isn't Rejected.
While an email is sent when a return is Accepted, you may not have seen it if it was re-directed to your spam folder.
If you sign in and see that the status is still Pending, you need to wait until it changes to Accepted or Rejected.
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