Opk question

Kerri
I use the Clearblue Advanced Digital OPK test. This was my first cycle to use it, and I got my first flashing smiley face. (Yay! I was getting discouraged.)
I know that I keep testing until I get the non-flashing one, but do I stop testing after I get the non-flashing one once? Or keep testing until I get back to just the plain circle?