Clear Blue Digital

I’ve used the clear blue digital for a couple of months now. The first time I got a few days of flashing smileys and then a solid smiley on CD14, I did fall pregnant that month but that unfortunately resulted in a miscarriage. I’m back to using the same test again this month and the first day was a blank circle on CD9 and today on CD10 I got a solid smiley so had no flashing smiley inbetween. 

Is there any reason for this? I didn’t expect to peak so early in my cycle. Does that mean our best chances of conceiving are today and tomorrow? 

Thank you!