HELP! Ovulation day confusion

Kris

I’m completely confused. Maybe one of you ladies can help me out. My original ovulation day would have been January 11, I’ve been testing with the digital OPK test and every single day I test it is coming up as low. Now it is saying my ovulation day is the 18th. I usually ovulate on day 16 but this is saying I’m going to ovulate on day 23. My period has been regular and I’m on a 28 day cycle. Is it possible to ovulate this late?