Until now I haven't received my state tax refund?
Make sure your state return was accepted: https://turbotax.intuit.com/tax-tools/efile-status-lookup/
Federal and state refunds come from completely separate entities. You cannot expect them to arrive at the same time.
To track your state refund:
https://ttlc.intuit.com/questions/1899433-how-do-i-track-my-state-refund