Just, I would also go in hospital as soon as it's available. You might give the reason for the spouse to pick children up early is because you are going into the hospital for tests. You do not have to share any more than that, and, once in, make sure his name is not on the list so they will not even acknowledge that you are in that hospital! Or, that you are trying out a new medication that they need to observe you for.

Or no reason at all. TIme to take care of yourself. It will just be a blip in the scheme of things, though I'm sure it looks much larger to you since you are so close to it.