My federal return has come yet. Is there any possible problems that happened?

I've filed my taxes around Jan 15th and I've gotten an correspondent audit on my states but quickly fixed my states (wrong information). Now that I've got my states, I still haven't received my federal returns yet. The mistake i made on my states was that i put too much state credit on my 1040's (i did this on taxact.com). Do you think I made the same mistake on my federals but the IRS haven't sent my audit letter yet or something else?