Continue testing or test when I’m supposed to ?

Hey i just started fresh ttc ,ovulation testing,etc I was told by my period trackers and the test to start testing LH on my cycle day 19 but I started a little early which may be the case for my empty smileys but I want to analyze the test sticks too to see if they get darker day by day ! OKAY HERES THIS THE FIRST TOP ONE WAS TAKEN CD15 in the afternoon after limiting drink consumption the middle was from today with fmu and the bottom was today at 8:00 ...do you think I should keep testing or wait till I was directed to ????