After you file

What do you mean "sent"?   Does the IRS show they sent it?  If you didn't select Direct Deposit then it would be sent to the address on your return.  Check the top of the 1040.  Or did you have the fees deducted from your federal refund?

 

Has the IRS actually sent your refund?  IRS Where’s My Refund
https://www.irs.gov/refunds