Can I go back into my state to make sure that I check the right box for my checking account and not my savings

You can review what bank account you set up to have your refunds direct deposited to by reviewing your TurboTax Electronic Filing Instructions Page.  If you set up to have your state refund direct deposited to your bank account, it will be documented on this instruction sheet.  As long as the account and routing numbers are correct, checking the savings box instead of the checking box (and vice versa) will not affect your direct deposit.

Depending on your state, you may also find the direct deposit information printed on the return.  You can print your return along with your TurboTax Electronic Filing Instructions by opening the Print Center in the left side panel after you login to your return.  

Please see these TurboTax Help Articles for more information:

•  How do I view, print, or download my tax returns for a previous year?  
•  Can I print a copy of my current year return before filing?