You mention a spouse...did you file Married Filing Separately and claim your child? I ask this because if you are married, you typically would file as Married Filing Jointly, and you both would claim the child as a dependent. The filing status with the best tax rate and the widest access to credits and deductions is Married Filing Jointly--just for reference.
Please advise the filing status you used and the filing status your spouse plans to use. This will help us resolve this for you.