I'm confused what size Birkin you bought exactly, a 30 or 35?
That said, call up the store or go there right away and discuss with the store what your options you have. The longer you wait, the harder it will be for them to do something for you. I don't think you should keep a bag you are not sure about, especially considering this is your first H bag.
That said, call up the store or go there right away and discuss with the store what your options you have. The longer you wait, the harder it will be for them to do something for you. I don't think you should keep a bag you are not sure about, especially considering this is your first H bag.