What does 'soon' mean in PhD application?

[physicsnav]

I had a PhD interview on 8th March. One of the interviewers told me they will let me know the decision 'soon'. I had the impression that the interview did not go bad. It is been more than a week that I haven't heard anything from them. I wanted to ask you is it still soon to get in touch with them? I am asking since there is an exam in the next week and if I'm accepted, I will withdraw from that exam. The university is in central Europe. Thanks.

[Phoenix88]

A lot can go on in a week in a professor's calendar. Since the interviewers are often professors themselves, they may not have gotten around to finalizing decisions, or drafting letters of acceptance or rejection within a week. 

I'd give it one more week and then maybe reach out to the department administration department to get a better timeline!