"I entered my charitable contributions into a schedule A"
Exactly how did you enter the contributions? You cannot enter contributions directly on Schedule A. If you are using forms mode you have to enter the contributions on a Charitable Organization Worksheet. Or you can enter the contributions using the Step-by-Step interview.
Are you using the downloaded desktop TurboTax software installed on your computer or the web-based TurboTax Online?
Even after you enter charitable contributions, Schedule A will not appear in your tax return unless your total itemized deductions are more than your standard deduction. In the desktop TurboTax software you can open Schedule A in forms mode even if it's not included in your tax return. The contributions that you entered will be there.
