Dude, relax. It sounds like you're on the verge of a nervous breakdown.
Personally, I haven't even apply, heck I haven't finish university yet. IMO, I don't think the crop from the 1st Interview will be so bad that there will be no more than 3 people. From what I have read from this board is that CX don't really have a time frame in regards to contacting people. Some have been called as short as 7 days or as long as a month. Didn't you just finish the 1st Interview a few days ago?