Well it's good that you're ok, I personally would have passed out to learn I had a large mass on my lung...probably would have had a heart attack before they could come back and tell me it was fluid.
I hate hospitals and you're 100% right, you get no sleep in a hospital sat hey check your vitals at 3:00am and the person in the room with you is calling the nurse every half hour. Terrible. It's why as a patient you end up sleeping half the day (boredom and can't sleep at night).