How do I see which 1099-R forms were added once filed?

I had filed my taxes about 2 weeks ago, and just received a form 1099-R in the mail. I thought I had recieved all forms digitally, but one that I don’t recall seeing arrived. I was just wondering how I can see if this form was added to my tax return? I downloaded and viewed for tax return and tried following some previous questions, but the numbers are not adding up and I’m getting a larger amount than what I have. Any help is appreciated!