Clearblue Digital Opk

C
I'm so confused. I've been trying to figure out when I ovulated. I got my first surge a week ago and continued to get the solid smiley 7 days in a row! Has this happened to anyone and what does it mean? This is the test that is either a blank circle or smiley and the smiley means you will ovulate in 12-48 hours. Why am I still receiving a smiley a week later and have I seriously not ovulated ? Help ; /