You can check the status of your return by using the E-file Status Lookup on the following link.
https://turbotax.intuit.com/tax-tools/efile-status-lookup/
A "pending" status means the return was sent to the IRS, and it is waiting to be processed. The IRS will then change the status to "accepted" or "rejected".
To track your Federal return, you can use the Where's My Refund Tool here.
To track your State Return, please follow the FAQ here.