Application Sent, No Notification

<p>Okay, I applied to a summer program almost two weeks ago. I wasn't expecting a notification from the program saying that they got our apps, but two of my friends who applied got emails two days ago. I kinda freaked out, but my friends told me they probably will email it to you sooner or later. When do you think I should email the program? Should I wait a few days or do it ASAP? Thanks to any responses.</p>