Now I'm super confused, Glow! what the heck?!?!

Up until yesterday glow showed my fertile window (green) all filled in starting the day before I got my first flashing smiley face on opk (high) which I got for 5 days. I finally got my solid smiley (peak) on December 15th and that is the last positive I got. So I have been counting dpo starting 1 dpo on dec. 17th. Today I checked glow and all of a sudden it's showing my fertile window before I had my peak test????! Am I 4 dpo or 7 dpo? HELP! Please and thank you!