Can someone help me I am starting to stress out. I am currently using a clearblue digital ovulation test its my CD17 and still have not received a smiley face .  I don't know if somehow I missed the surge I feel Ike I usually ovulate earlier in the my cycle .  Does anyone know if I should be taking these tests in the morning or evening ?? For the past 8 days I have been taking the tests in the morning.  I am really worried that i missed it.  In currently using 4 apps to track ovulation and all of them said I should have ovulated yesterday ...any help would be appreciated.