You may have submitted it in early April, I have no way of telling, I'm afraid, because another submission was made four days ago.
So, here ya go - your suggestion has been received in this category. It will not disappear or time-out. Eventually it will get reviewed, but we have no way of knowing when that will be, due to the purely volunteer nature of the directory.
In the meantime please do not submit - it does nothing to help you get reviewed more quickly. In fact, it may slow it down (some editors sort the list of unreviewed sites by last submission date).
So please sit tight. "Submit it and forget it" is the motto.