Multiple negatives, but still no af? How early is too early to test?

Shelby
I've taken three tests, all BFN, but I'm 11 dpo. Shouldn't I get a BFP soon? I am just so discouraged. 
Edit/Update
Still no AF! That means I'm almost two weeks late and I still haven't gotten my BFP. :( Pray for us that I get one this weekend and AF doesn't show up!!