i want to cry, i messed up ?

I think I lost my son's social security card. I can't find it and it was in my purse. I know it shouldn't have been but I forgot to take it out and I'm scared I dropped it somewhere. It was in a little envelope looking this along with my license. I don't even care about my license, that's easier to replace but now idk what to do about the card. I know it's replaceable too but his information would basically be out there