Obviously we r ttc, this is #2 for me and #1 for my SO. This is the 1st time I have ever tried <a href="https://play.google.com/store/apps/details?id=com.glow.android">tracking ovulation</a> and charting ect. So i guess my question would be how do you track DPO? Does dpo #1 start at the first day after the surge on the LH strip? like for instance, i had my surge on the test strip on friday night - saturday. then i 100% know i ovulated sunday, i felt it on my left side. For me does Day #1 on dpo start yesterday (monday) or does it start sunday? im so confused with this stuff. Thanks in advance for any help on this. i just want to know when i can take the first test. AF is due christmas day. i cant wait to see my BFP on christmas morning (very hopeful as is everyone else)!!! baby dust to all and good luck this month