Pill works up to 3 days (72 hours). Spotting should be notmal, and may mess up your period cycle a bit. You should be okay.
Sorry I will be ovulating in 3 more days , I have a period tracker
How do you know you have started ovulating? And what do you mean by "started" ovulating? Ovulating happens when the egg pops out of the ovary, the start and end are pretty close together, like maybe a few seconds.