Count down to testing

Samantha • Expecting baby #1 March 2016 --
So I am on my ttw and have already tested two time and ended up with a bfn😩 it's so hard to not test. So I went on google and found a website called www.countdowntopregnancy.com and it gives you the best day to test !
Thought I would share in case any ladies are on the ttw and feeling tortured
This website also predicts my period starting 6/21 while glow says 6/20 😕