In all honesty, your cm being of egg white consistancy is probably a better indicator of your fertility than the tests are, unless you are using those tests twice a day. Here's why:
if you are taking the test at 10 am in the morning on day 1 and surge on day one at around 5pm, then your am test on day 1 and am test on day 2 will have missed that surge.
If you test at 10am and again at 3 pm, the 3pm will pick up the surge.
I hope you were able to follow this.
Many fertility specialists will often recommend to a patient being monitored, that they take an opk test 2 times a day just for the reason I have mentioned above.
I hope this was of some help to you! Good luck!