The IRS is holding returns until Feb 15th that claim the Earned Income Credit or the Additional Child Tax Credit. Refunds are not being issued until after the 15th. You should check back after the 15th, then you should have a date you should receive your refund.
See the following from the IRS:
The IRS reminds taxpayers that a new law requires the IRS to hold refunds claiming the Earned Income Tax Credit (EITC) and the Additional Child Tax Credit (ACTC) until Feb. 15. In addition, the IRS wants taxpayers to be aware it will take several days for these refunds to be released and processed through financial institutions. Factoring in weekends and the President’s Day holiday, the IRS cautions that many affected taxpayers may not have actual access to their refunds until the week of Feb. 27.