Was your return accepted? If your Federal was accepted, then no one here would know any thing about why you have not received your refund. Only the IRS knows why your refund is delayed. You can keep checking the IRS website, Where's My Refund, that should have information about the processing of your return & refund. the website updates only once a day, so checking more will not show any difference.
https://www.irs.gov/refunds
