What should I go by?

Okay so my OPK do match this app when I ovulate and I’m baby dancing just before and even on for months now and I’m just not falling pregnant. But the thing is I’ve been pregnant twice before and I never used OPK to track ovulation I just went by my CM which they say not to!! But I would in the past baby dance when it’s like egg white but I only get that discharge days before ovulation like JUST when my fertile window is starting.

Why should I track? The app and the OPK tests or my body which has helped me before? Anyone else in the same boat or anything. Love to hear any similar stories.