An order confirmation showing that you paid your TurboTax fees does not mean your tax return was filed. That only means you paid TT. If you did not enter the correct 2017 AGI then you could not have e-filed your 2018 tax return--it would be rejected by the IRS.
No one can check for you--no one has access to your tax return or account.
To check your e-file status
https://turbotax.intuit.com/tax-tools/efile-status-lookup/
If you are still trying to e-file and now have your 2017 AGI:
https://ttlc.intuit.com/questions/2551840-where-do-i-correct-my-2017-agi-in-turbotax-online
If you filed 2017 late or amended then you might need to try using zero instead of the AGI. If neither one of those work, then you need to print, sign and mail your 2018 return.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**