how will I find out if I didn't get the job???

First off I want to say how excited I am to have found this forum! I've been on this site for a few months, and I'm so excited to have found a forum dedicated to career advice.

Here's a little background of myself: I'm graduating from an ASN program in one month. Words can not even begin to explain how excited I am to start working! I've been job searching for the past month or two and it's been a lot more challenging than I ever dreamed it would be! I had one interview a little over a month ago on my dream unit. The nurse manager was very nice and I would say that overall I did well. Not great but not bad either, the problem was I was just so nervous! Two weeks ago I got a call from HR requesting that I come in and shadow a nurse on the unit for the evening. So about a week and a half ago I shadowed a nurse and I absolutely loved it, and the staff was all great and so friendly! But I haven't heard anything since. The day after I shadowed, I called the nurse manager and left a message along w/my phone number thanking her for the experience. I just called HR today to follow up and see if she heard anything but she didn't answer either, so I just left a message. Right now I'm thinking that I didn't get the job. So here's my question- how do you know when you didn't get the job? Will HR be kind enough to call me and tell me they "found a better candidate?" Or should I just not expect a return phone call? I guess I'm being too senestive about this but it seems really mean to just leave someone hanging like that and not let them know what's going on!
Thanks in advance for your responses! :heartbeat
Does anyone know how I can edit this posting? I just noticed a typo!