Clearblue advanced

Hello all, for my ladies that regularly use opk if you have regular cycles how many high fertile days did you normally have before getting your peak? According to glow I should have ovulated yesterday, never got a peak and I'm still showing high fertility (which I thought after ovulation it would go back to low, as it was low in the beginning of my cycle). I know obviously glow isnt always 100% right and sometimes its nowhere near when you actually ovulate. I'm on cycle day 15 and had my first high on cycle day 9, my cycles are usually 27 days give 2-3 days every now and then but usually it isnt a big difference. I've read about ladies using this brand and one cycle theyll have 1-2 days of high fertility and they next they'll have 14 days of high fertility. I was just wondering if this is normal and if clearblue is a reliable brand. Or if maybe I would just be better finishing my cycle out and then switching to something else. Also I would like to add this is my first cycle using one and i read somewhere that the first cycle is kind of a baseline for ovulation testing, any help is greatly appreciated! I would also like to add that when you take the strip out of the read I can see a faint blue line but it's nowhere near is a deal as a the control line and I know this is generally considered a negative. (Its supposed to be the same shade or darker than the control line right?)

Edit: I tested about an hour ago and got my peak after testing the second time today