To check your federal refund stats click here: https://sa.www4.irs.gov/irfof/lang/en/irfofgetstatus.jsp
To check your state refund status click here: https://ttlc.intuit.com/replies/3300211
If it has been over 21 days since your return was accepted, you should call the IRS and/or your state to inquire about the refund status.