You should always receive a printout of some kind that will either tell you your result or tell you why you haven't been given a result.
However, you can check your result if you login to Pearson VUE and click the exam history link.
Contact ISC2 Member Services first thing on Monday!
I recommend you call them and keep calling them until you speak to someone. Leaving a voicemail or sending an email takes a long time to get a response.