ovia app

Shelbi
So my ovia app says I can test for pregnancy in 1 day, yet it says my period isn't due until the 17th. That app has never done that before. I'm thinking because I had a positive ovulation in May. But then this app ass my period is due the 14th. Lol. Confusing. I've been testing like crazy for a week. Thinking maybe I need to wait until closer to the 17th? Anyone ever have that happen?