I had the Clearblue advanced that give you an empty circle when you aren't fertile, a flashing smiley when your estrogen is rising and you are in high fertility, and a solid smiley when your LH surge is detected and ovulation is about to occur. I had a few days of the empty circle, 5 days of a flashing smile, then the solid smile today.
FMU is first morning urine. With the OPKs you have, it's advised that you use the urine from when you first wake up! If you wake up in the middle of the night and have been asleep for longer than the amount of sleep you will get when going back to sleep, use the urine in the middle of the night. That's kind of confusing, sorry. Does that make sense?