Clear Blue Fertility Monitor

Has anyone used one of these before? This is my first cycle using it. I started my period on the 5th. Got off it on the 12th. I’ve been testing everyday since the 10th (the device asks for 1 test a day). I have been getting ‘high’ everyday since last Wednesday. Is this normal?? I’m starting to think I won’t ever see a peak! I guess the bottom of this, I would like to get some feedback from those who have used this device before, opinions, etc. Just wondering if it’s normal to see this many high days before a peak. Thank you in advance!!!