Grammar, Usage / How to use quotation marks at the end of a sentence. [14]

My question is this:

When I end a sentence with a word in quotation marks, do the quotation marks ever belong before the period? Example:

My Mom says I am a "slob," but I think it is unfair to call me a "slob."

Or should it be:

My Mom says I am a "slob", but I think it is unfair to call me a "slob".