Clear blue advanced digital, take 2

I posted yesterday stating I took a clear blue advanced digital opk on 6/20 @ 9pm and it came back low. 06/21 @ 730am it came back peak. I came home from work on 06/21 @ 6pm and it was now low( please keep in mind this reader was from a new box). NOW, today 06/22 @ 730am it was peak again( same reader as 06/21 @ 6pm). WTH is going on. Also this morning I took another non/digital opk and it shows no surge, but yet the digital shows peak? So confused, advice appreciated. Also as an FYI, I'm currently on clomid. Is the medication maybe throwing something off?