Oddly enough, I decided to test early with OPK, it was positive, super positive. So hubby I used preseed for the 1st time, I only used 1.5g because I had heard a little goes a long way, that was a perfect amount for us. I updated <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> and I still have 3 days left in my fertile window, fingers crossed this works! Been ttc for 6 months now.