I have irregular cycles ( shortest being 37 days and longest 79 days).

My last period is on July 24th but only for 1 day.

This is first trying opks. My results seemed to have lower LH in the evening. Is it normal that the opk results go darker and lighter?

Based on the app, my ovulation supposed to be in CD 42 but I’ve been testing since CD 21 since this is my first time and with irregular cyle, I’m not realy sure. Am I testing to early?? Trying to find out Am I ovulating because I’m ttcing.

Anyone with same experience? I have concerned that I’m not ovulating.Please help...