The IRS is currently limited in its operations so you may have to wait a bit longer to contact them. 

IRS operations

The online link is your best option to track your refund.  I have attached a link with more answers from the IRS as to why your refund may be taking longer to process.

Federal refund questions

I have included a link to assist you once they are open and taking calls again.

IRS refund status

Is there a way to determine if my submitted tax return has all the appropriate items? If I'm missing something, i.e. some form that wasn't attached by Turbo Tax for some reason, is there a way for me to find that out?

No, there is no way for TT to do it. However, there are a couple of ways you can verify yourself. 1) Do a line by line comparison of 2019 and 2018. If you see there are differences, understand why. 2) Request an IRS transcript here and see if everything that the IRS has on file is also reported on your return. When e-filing a tax return, any attachments that are required are added in electronic format to the return.

Only very rarely are taxpayers asked to attached a printed form to their e-filed return (which does mean that they have to print their return, add the form, and mail it).

Otherwise, this is a self-prepared return, and you are ultimately responsible for checking the numbers and the forms.

Help us help you if you see something missing.

[Edited 07/14/2020 12:45 pm CDT]