[Help] And it just got so much worse [Update]

So it was getting better.

Was.

My friend, who wanted to run away but thought it over, has had an allergic reaction. He feels dizzy, has abdominal pain, and blurry vision. He also fell unconscious. He's in the ER (Emergency Room) or at the very least was for half a day or more. The doctors don't know what's wrong with him. I'm really scared and very, very nervous/anxious.

What if something happens to him? What if he gets seriously hurt? What if he dies?

I can't get my mind off of him. He's one of my few friends, and he stuck with me through some tough times.

Help.