After you file

that may be one of your only recourses.
....But....before driving down to the IRS office
You should also re-check your filing status here (if you are talking about an original e-filed tax return):
<a href="https://shop.turbotax.intuit.com/efile/efile_status_lookup.jsp" rel="nofollow" target="_blank">https://shop.turbotax.intuit.com/efile/efile_status_lookup.jsp</a>
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*