Im not sure sure about my heritage?

ok on my dads side we are mixed with most german, scotch and irish and on my moms side were mixed with lots of things but were not mixed with black at all. were all white i have lots of freckles and brown hair i know im scotch -irish my last name is allred like my ancestors who came from scotland or ireland or germany but i dont have just one heritage im not full blooded any thing i think as my self as those mixed breed dogs no one wants why some others are full blooded whatever there heritage is like those full breed dogs every one wants while im mixed but remember im not black or half black or a little bit black or hispanic im as white as they come!!!!!!!!!!!!!!!!!! i wish i was full blooded scotch or irish but im just a mixed little white girl with no real heritage for what i know and dont know who i am or what am i !!!!!!!!!!