Yes. If you saved your returns as pdfs, you can open them and scroll to Form 8812. Check to see that line 5 matches what you expected $2,000 times your qualifying children.
If you do not have the pdfs, you can get them in TurboTax online.
Here's how:
1. Log in to TurboTax
2. Click Your tax returns & documents
3. Pick year you want to check, and then Download/print
If you cannot access your return in either of those ways, you can get a transcript from the IRS which gives you the tax data from your past returns. You can obtain a transcript for free from the IRS's website: Get your tax records and transcripts
See: What is an IRS Tax Transcript and How Do I Request One? for more information.
