Michael - first of all, relax. And for goodness sakes, smile! This is not the end of the world or the end of your life.
Sounds like you got stuck with a bunch of medical personnel who didn't know what they were dealing with. People with platelet counts of 4k are not knocking on death's door. If you were able to talk and breathe, you certainly didn't need life support.
ITP can be scary, but it is not a death sentence and life can still go on normally. Sometimes you have to treat when counts go down but for the most part, you can still do what you normally did.
Start reading as much as you can and ask questions.
Oh - when a platelet count is given, it is given in thousands. Example - your count of 4 was really 4,000 platelets per liter of blood....not 4 platelets in your entire body.