I would try tracking it here to see if there are any updates: https://www.irs.gov/refunds
Also, you may want to give the IRS a call directly as well: 800-829-1040 Option 2. Hours are Monday through Friday, 7 a.m. to 7 p.m. local time.
Below is some additional information concerning refund tracking:
https://ttlc.intuit.com/replies/5340655