Do I have an accent?

I went to the baby shower of my friend's brother's girlfriend. I don't know her family very well and there seem to be hundreds of them, so I stuck to my friend's side. Now, M. is a very good friend I've known for years. Yet, she is a little status conscious and kept introducing me as " This is Sara, my friend who live in South America."

At one point, a lady who was sitting next to me (a cousin I think) said "Oh! It makes sense now. I thought I detected a slight accent." What!?!?! I have an accent? Here my whole life I thought I had a cutsie sort of Minnesota twang, but apparently not. Maybe it's because I try soooo hard to not let my accent slip out. Seriously, it only comes out when I'm under pressure like "Durnitt, I'm lost dontcha know?"

Anyways, I think that I should take advantage of this. It's not the first time I've been told I have an accent. Or maybe, I should just stop worrying and revel in my accent ambiguity.