We had a compact med/surg course as well and yes, it is hard, but you can do it, I did very well in that class. My biggest suggestion is to not let people freak you out about it. Go in with a positive attitude that you can do this and you will do it. I have heard in every class that I've started the whole, "This is the class where everybody fails," speech. The first few really scared me, but after that, I figured, in the end, some people have to graduate, so I'm just plain 'ol gonna be one of those people. Everyone said the same thing about our med/surg class, but you know what, when we got past it, then they all said the same thing about peds/ob, which is the class I am in now. I think they just like to psyche us out.
Enjoy it and learn as much as you can. Study every chance you get, don't get behind. Take good notes. If you don't understand something, break it down and really work with it until it makes sense to you, don't just skip over it because you will be doing yourself a disservice. Take every clinical opportunity and learn from it.
I really loved med/surg, it was very hard, but very rewarding. Keep your chin up and your nose to the grind and you will survive.
Best of luck! Let us know how it goes.