Maddy,
I would like to share my thoughts, although they are quite vague.
Given the information that you have presented, my opinion is, that there is simply not enough information to go on here.
Yes, perhaps this is a dream of caution, but I cannot see any precognitive value. My suggestion is, not to try to force an answer relating to what will or won't happen in the future by what you have seen in this dream.
I would suggest that you begin to journal your dreams (Tony gives excellent guidance that will help you in this area)...
Take your time, and read the valuable information that he shares with us on this site.
The journal will allow you to go back and assess the dream's significance in your life as you go forward in learning.
As well, you will likely have further dreams relating to the subject matter that you have shared with us. Through examination of these dreams you will be able to see a pattern and derive more precise meaning.
regards,
sailrmc