the recommended time is to BD for 3 days (some would say 4), starting on the day of the smiley. That should get you well covered! Btw, its not dumb :)
The thing is I don't really trust Clearblue digital as 100% accurate. It will be better if you cross reference with your fertile mucus. And reach for that grapefruit juice! Its supposed to help with EWCM. Good luck!
why i never get answers. do i ask always dump question? :(