<human>: My boyfriend (a fellow Redditor) and I were suppose to see each other today for the first time in a couple of weeks because of our college's winter break. He was on his way home after work and had to pull over to suddenly vomit. He went home, got worse and then I didn't hear from him for a few hours. I assumed he had fallen asleep. 
I just got a text message from him saying that he went to the hospital via ambulance because he was "nearly passing out" due to dehydration and started having bad chest pains. He made it all sound pretty simple and I assumed he was just hooked up to a basic IV.  
Then just now he said he'd talk to me later because the morphine was making him sleepy.  I freaked, because I know they don't give that stuff out lightly. I asked why he was on it and he didn't give me a coherent answer and is now out cold. He tends to down play things to keep me from worrying but now I'm worried even more. 
Why would they put him on morphine? What could the chest pains be caused by?

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<bot>: bf in hospital after dehydration from vomiting, said he had bad chest pains, now the hospital has him on morphine. Why?