I will also pray for you and your son, in hopes that these feelings won't weigh heavily on your hearts. But, I agree with @giantbear and am sure that your "birth story" of him to you will be enough.
You never know, he could be like my son (who's 7 years old) and doesn't care about his birth story when I try and tell him about it. He just wants to hear about when he peed on us when changing his diaper. LOL