Should I be entering my 1099 G form before I finish filing.

[CarolynM]

Yes, you need to report the income from 1099-G on your tax return.

If it is for a tax refund, the payment may or may not be taxable, but it should be entered. 

TurboTax will ask a series of questions to make sure you are only taxed on appropriate 1099-G income.