ok how do i. . .? (a little advise please =])

ok heres the situation (il try to keep it as simple as possible)
i started a new school in september.
iv made some really great new friends.
on tuesday i have a pre- admission to hospital.
if i go to hospital il have to drop out of college.

thus and therefore how (if i do) should i tell my new friends?
they dont officially know about my ed but have possibly tagged on.
they also dont know that i was in hospital earlier this year.

if it was the other way round id want to know.

buttt i dont want them to treat me any differently.

or think im an attention seaker.

i might (by some magic twist of fate) not be re-admitted.
then what would they think? that i just said it for attention? or that im making a big deal about nothing?

ANY suggestions welcomed =]
thankyou mibbians!
xoxox