BFN 7dpo

Alexis
 Good morning all! 
 So sad , I woke up this morning and took a test and I got a BFN.  I'm 7dpo but I have a friend that got a BFP at 7dpo . I was wondering what's the earliest others have gotten their BFP.  We BD the day b4 I ovulated so I'm really hoping we made a little one !