I didn't efile my federal tax return, why does it appear on my account as "Accepted"?

I mailed in the federal tax return and applied for my wife's ITIN in April. She just received her ITIN after 4 months sharp. So we proceeded to e-file the state return on TurboTax and I remember choosing only the State tax return to e-file, but for whatever reason, on my homepage, it shows that both the federal and state tax returns are accepted and the filing date is August 20th. This would mean I had filed my state tax return twice. If this was the case, would I be in any trouble? Is there any way I can check to see which returns were submitted on my account?