You can tell them of your suicidal ideation. Unless you have a plan and are imminently going to follow it you should be safe to discuss it without being hospitalized. I understand not wanting to be in the hospital as well but its really not that bad. I mean, I wouldnt go there for a vacation but it always seems like the end of the world and while not great, its not awful. Plus they can fiddle with your meds and see the progress on a day to day basis.