Sure hope you used two accounts and two user ID's. If you used the same account and same user ID, the second return overwrote the first one and it is gone. When you use online TurboTax, you get one return per fee. Each return needs its own account and user ID. They can be under the same email---but must have different accounts and user ID's.
Try the recovery tool to see if you have a second account and user ID.
Many people have multiple TT accounts and forget how to access them. Log out of the account you are in now.
Account Recovery
https://ttlc.intuit.com/questions/1901535-forgot-your-turbotax-online-user-id-or-password
https://ttlc.intuit.com/questions/1901486-how-many-turbotax-accounts-do-i-have
**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.**
