How long do you wait to test after you've missed AF?

My periods have been regular, within a few days of the last start date, and it's been coming a bit earlier each month. And this app has done awesome predicting when it's coming. Well, I was supposed to start Thursday. It's day 3 that I'm late. I've noticed this past week I have been urinating a lot, but that can be normal for me. I don't know how long I should wait to test. What's y'alls advice??