After you file

If you filed through TurboTax I would suggest you go to the IRS website and put in your info: https://sa.www4.irs.gov/irfof-wmsp/notice

If the website says your information doesn't match you will have to go to the main IRS website and download a transcript of your tax return to get an exact match for the info, it's free to create an account to get the info.