If you efiled, you can double-check with this tool to be sure the return was efiled successfully and accepted:
https://shop.turbotax.intuit.com/efile/efile_status_lookup.jsp
Then if it was accepted (or if you mailed the return), see this FAQ and click on your state:
FAQ: How do I track my state refund?
https://ttlc.intuit.com/replies/3300211
