I just received my 1095-C from my former employer but i already filed and received my tax return.

You don’t need your form 1095-C to file your tax return.  TurboTax will ask you questions about your health coverage but your form 1095-C isn’t needed. Just keep the form for your files.

If you’ve already filed and then receive it, it’s ok.  You don’t need to amend your return.