Effectiveness if taken late.

Mariel

I’ve been now 2 weeks on Nikki and so far so good but now I have a question. I take my pill religiously at 11:00am, what is the window of chance that the effectiveness gets “loosen” a bit if you don’t take it at exactly 11am. There has been times in which I’ve taken it at 11:04 and as much as 11:15am. How bad can that mess up the effectiveness or it has to be taken like a few hours later for it’s effectiveness to loosen up?