Received a 1099-int form after I filed. There was no interest on the form. Should I file an amended return?

If there was no income to report on the form then you have nothing to amend on your filed income tax return.  

Critter-3 is correct. You don't need to amend your income tax return(s) if the 1099-INT form does not change your refund or amount due. 

For additional information, please see Do I need to amend?