Ancestry/Genealogy

I found the results a little less specific than what I was hoping for. It said most of my ancestry is from the British Isles, which was pretty much what I expected, with some from "northern Europe," which seemed rather vague to me. It did not show any native American ancestry, which surprised me, because a cousin of mine who did some genealogical research told me there is native ancestry in our family tree. (He supposedly confirmed this, but he's deceased now, so I can't ask him about it. )

I've thought about getting my DNA done again somewhere else, but wasn't sure which, if any, company would be likely to tell me anything I don't already know. Any thoughts?