Ovulation , help please

Kayleigh 🏴󠁧󠁢󠁷󠁬󠁳󠁿 ttc 🌈🤞

Ok so on my 6th day of testing with the clearblue advanced digital & have flashing smileys , on Monday night I had finally had my steady smiley face , today (Wednesday ) I feel like my cervix is open so on what day do I count my dpo on ? Is it Monday , Tuesday or today ???