Right ladies, I had what was a dark line on my OPK test on Friday, tried it with clearblue but it said negative. Last few days both clearblue and my other ovulation sticks been negative. Just done today's test, clearblue says negative but I swear the lines are getting darker?! Will test again later. Just found out clearblue is half as sensitive as the other tests I'm using. Had what I think is egg white mucus when wiping (sorry tmi) but don't know if that is just from last night's BD?! 😂 on CD 21 and last month was a 35 day cycle. thoughts please?