The pill and period cycle predictions

I'm on a birth control pill called Seasonale (Seasonique in the US) and the way this one works is I take the pink ones for 3 months, then the white ones for a week. Meaning I only get 4 periods a year. I added the pill to the health profile on the app, and set the cycle length to 90 days, but the calendar is still showing a predicted period each month. Is there a way to change this? I don't want to log that I'm not getting it when the app thinks I should be, I'm afraid that will screw with everything.