Confusing Ovulation test

Hi ladies,

I am using clearblue advance ovulation tests. This is my first time using the advance ones(usually us just regular clearblue). If you are unfamiliar they show a flashing smiley face for high fertility and a solid smiley face for peak. I have gotten a "high" from days 17-23 in my cycle so far (today is day 23) but never a "peak". Has this happen to anyone else? I usually ovulate on day 17 so I'm alittle confused. The package says the "high" is detecting estrogen?? Any help would be great!