I took the clearblue digital on Thursday-Saturday & there was an empty circle. 1 time a day on Sunday-Tuesday. All smiley faces. I was only able to have intercourse Tuesday night as my husband was out of town. Wednesday at 1:00 p.m. another smiley face. So we did the deed again Wednesday night. I took a pregnancy test on Friday just to make sure i wasn't pregnant (4 days of smileys). Do you think i missed my chance since my 1st positive was on Sunday? I called clearblue & they said to only go by the first 2 smiley faces as your most fertile. Last month, I got 2 days of smiley faces, then none after that.