Please Help Me I'm Freaking Out

Okay, so I bought my 1994 honda civic dx about 2 weeks ago. runs great everything is fine. figured I would run a carfax report on it (stupid to wait till after I bought i know) and it has "not actual mileage" titles issued to it. 4 of the titles issued to it also say "exempt from issuing mileage". One says "NAM" and reads at 42000 miles a few years after it was reported to have had 73000 miles on it. The odometer is 6-7 digit (can't remember which one). Did I get jipped? The sales company told me "clear title" when I bought it, and i have it in writing. is there anything I can do? Am I freaking out for no reason? Please someone help...

were you able to get it registered? if so youre fine, dont worry about it