First, make sure the 2018 state return was successfully filed.

If you used Online TurboTax, log in to your account and at the Tax Home scroll down to "Your Tax Returns & Documents."  Expand that section and choose tax year 2018.   What is showing for the state return--does it say accepted, rejected, printed, started, ready to mail, or what?

If it was successfully filed, here's how to contact the state tax agency to check on it:

https://ttlc.intuit.com/community/state-taxes/help/how-do-i-contact-my-state-department-of-revenue/0...

TurboTax does not receive any updates from the IRS once they have accepted your return. Each state handles its own refunds

Please click the TurboTax help link, listed below, to learn how to track your State return. https://ttlc.intuit.com/questions/1899433