We are ttc for the 1st month. We bought the clearblue digital opk. I have been tracking since November and my avg is 27 days I'm on cd10. On cd3 we started tracking bbt and in cd8 we started opk test. So I was doing some reading and I saw where other women have found that testing in the afternoon was better than the first urine.  So cd8-9 i tested in the afternoon about 530-45 when I got home from work. The results were "O" both times.  So this morning Wednesday my husband said well why don't you check this morning and then again this afternoon.  So I did and it came up with the smiley face.  According to the opk I'm ovulating.  But here's my question.  Should I have been checking in the morning to begin with and not in the afternoon?