@BBKND,
We have all been there. The only advice I can give you is to try to think about something else. There is nothing you can do at this point.
There are too many unknowns to speculate on whether you got the job or not. There is nothing you said that makes me think that you didn't get it. But often employers call the successful candidate first, because that way if their first choice says "no" they can go to their second choice without them ever knowing it is their second choice. Or they may have had more interviews on Thursday or today. Three business days after an second interview is actually quick to make a decision.
So be hopeful. Spend time with friends this weekend. And try no to think about it. I have been in your shoes many times so I know how you feel.
Good luck.