I never got my income tax check in the mail and it was mailed on March 6th
Please see this IRS FAQ for information on what to do if you have not received a mailed federal refund check and it has been over two weeks: https://sa.www4.irs.gov/irfof/lang/en/irtrconlinehelp.jsp
This is the link to the form you will need: https://www.irs.gov/pub/irs-pdf/f3911.pdf