Does it say, your return is being processed, or, your return is STILL being processed? Sometimes when your bars disappear it means an actual person is reviewing your return instead of the automated computer. It doesn't mean anything special wrong usually, every so often they just choose random returns to go over. It happened to me last year but it was all fine in the end, it's not usually a big deal. (Other than the fact that you want your refund back asap)
