So you mailed both federal and state to the IRS? They should still process the federal return and ignore the state return. Do you remember if the Federal was on top or first? I think you just need to wait and see or call the IRS. When did you mail it? Are you getting a refund?
You can keep checking the IRS Where's My Refund but that isn't always updated and mailed returns are taking a long time to process this year.
https://www.irs.gov/refunds
Oh, and you have 3 years to file for a refund. If you are getting a refund there is no penalty for filing late.
