If you selected to have a check mailed for your refund or the bank rejected the Direct Deposit then the IRS will mail a check to the address on your return.
Has the IRS sent your refund?
You can check your Federal refund status at Where's My Refund.
Make sure you are using the refund amount from your actual federal tax return and not the combined amount Turbo Tax showed you at the end. That was for federal and state combined.