Why does the calendar change?

💙💙💗Desiree💗💙💙 • Mommy of 2 boys and 1 girl 👦👦👑👣🎀They are my everything

It says 1 day after ovulation and I haven't ovulated yet ? Is that going to mess up my chances for conceiving once I do get my positive opk? I'm on cycle day 18