I just went through the same thing...just do something to keep yourself busy....Noon on day 3, nothing. 6PM on day 3 boom, there she was. If you didn't keep it too wet, it's probably on its way.
Sometimes they get buried a little further than intended and take a little longer to surface. Give it until morning. It can take up to 4 or 5 days. Don't go digging and rooting around, either.
It's tough waiting...
I'm waiting on 2 others as well. All Dark Devils. I soil germed the first one, and while waiting for number one I worried that I had mushed it so I paper toweled 2 more...the first poked it's head hours later and both paper towel seeds showed taproots within 48 hrs. I suspect from what I have seen that Sweet Seeds have a very high germination rate.