2WW agonizing :S

Ang • 34 year old female TTC for several years. Diagnosed with a traumatic brain injury 4 years ago.
Ahhhh...this 2WW is BAD :S AF is due 10/7, so I'm just sitting back waiting :S I hope time flies :) I did the BD when my OPK came back positive :) I'm taking all kinds of vitamins and pregprep :) does anyone know how long it takes for pregprep to work?  This is barely my first month on the pregprep pills :S BABY DUST to all :)