Ok.. I just remembered this fic that I was trying to find too.. Last one I promise!! I will seriously start saving everything now..
This fic is multichaptered. I read it both in the livejournal and FF.net. 
I can only remember the first chapter because it had Dean drowning and Sam saves him by telling and begging him to breathe and there was a memorable quote "and because Dean had never been able to deny Sammy anything he did" or something like that. Anyway it's about Sam having a vision about a little girl, and they go to save her.. That's all I remember.. please help!!
Thanks

EDIT: NEVER MIND GUYS I FOUND ANOTHER POSTER TRYING TO FIND THIS FIC AND SOMEONE FOUND IT FOR THEM.. 
IT'S HERE http://www.fanfiction.net/u/704932/

thank you!!