Help me I'm confused

My af is usually 7-8 days long. This time it was only 3. I started taking my ovulating test(digital) Wednesday. Wednesday, Thursday, and Friday I got a big fat O. Saturday I tested and I got a solid smiley(peak). So this morning i tested and it was the flashing smiley which is (high). Is it normal to go from O to peak to high? I figured it would go from O to high to peak.