Is this my LH surge?

I took a Clear Blue Digital Advance Saturday and Sunday, both days I had the circle (low fertility.) This morning I took it and a test strip, the test strip was definitely darker and the CBDA was blinking smiley. I tested with just a strip about 15 minutes ago and the LH line definitely looks darker than the control. My fertile window atarted Saturday according to Glow. I'm trying to decide if I should test again tonight with the CBD opk or not.