Well, I was a combat medic. Truth be told, I didn't want a siong
posting, and my heart sank when it was revealed that I was posted
to 3 SIR after my combat medic course.
Even then, I really hoped that I would become a BCS (battalion
level) medic, and my hopes went up when my MO told me that he
wanted me to stay on as a BCS medic. Still, I got posted to one of
the rifle companies - as a platoon medic.
I won't lie to you. The course itself will be easy. It was already
pretty welfare during my time, and it's even more welfare now
(guaranteed nights off every week... even during the first
week!).
But being a platoon medic is going to be one of the toughest things
ever. I didn't get any respect or whatsoever from the men - medics
are supposed to be one of the most honourable vocations in the
Army, but they are also one of the most derided. I got picked on by
them a lot - it didn't help that I was more highly educated than
them and they have a suspicion of all those who are more
highly-educated. I swear to God, I didn't treat them any
differently from my friends, but they still picked on me
anyway.
People keep having the mentality that all medics are slackers, and
there's not a thing you can do about it to correct that
misperception. When I tell others that I'm a medic, they exclaim
that I'm a slacker, even though I'm a chiong sua warrior and they
get to do admin jobs. 
But I kept my hopes up, and did my best, and eventually I became a
company medic and got my three stripes. Things got much better
after that, and the men who used to pick on me somehow no longer
had the balls to do so any more. Bloody cowards. 
Anyway, the bottom line is, don't be too surprised that there are
people who will look down on you for your vocation. At the same
time, though, remember that for every one of those people who looks
down on you, there are many others who look to you with
respect.
As a final note, be proud of who you are, and who you will be - the
person who saves lives. The man who reduces suffering and hardship
of others.
Good luck. 