So, I've been doing these test twice a day for about 2 weeks now, I have a cheap brand, I have clearblue digital and clear blue advanced, according to my app I will be ovulating in 3 days which means on at least one test it should pick up, but it seems like the 2nd line is getting less dark, you can barely even see the second line! I don't know what to do, my cm is increasing but is still creamy and watery