Now It looks as if I haven't filed.
I have a pdf copy. How do I check the status?
You can check on the status of your e-file to verify whether or not it has been filed.
Please refer to the following help article below.
E-file status lookup.
You can save another backup copy of your tax return. Please refer to the article below.
Save a Backup Copy of Your Tax File - CommunitySave a Backup Copy of Your Tax File - Community