We teach two collegiate teams in the midwest US. I can confidently say that roughly 80% of my dancers have NO PREVIOUS DANCE TRAINING.
The beauty of a collegiate program is the fun atmosphere, comraderie and the affordable price tag. I agree with another writer that not all college programs are created equal!! What school are you attending? US/Europe or other?
In any case, don't fear, college programs are by and large designed for first time dancers

Best wishes, M