After you file

Thanks for responding & starting a new thread! 

If you filed an extension, you most likely have not filed your return. 
If you're completely uncertain if you filed your return or not, you can check on the IRS website to check your refund status. 

If you worked on your return and did not finish it, you should be able to "continue" in the software. If you did not, you can click "Start a new return" in the bright blue on the bottom.