Identity Theft

I lost my social security card about 2 years ago and am worried myself on if someone has been doing running things up with my number. When I tried to get a credit report online though, it said that there was no record found or something like that. It is the right number and my full name was spelled correctly. Could it have something to do with the address? Or is it just that My non existant credit because I have not used my number is fine?
 
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