Ovulation test confusion

Ok so I'm super confused..... Is this positive? Here is why I am confused if it is...... My AF ended 9/17,  on 9/20 I for a positive ovulation test. This morning I took a hpt (yes I know it's early but I couldn't wait) it was negative. I figured wel let me take an ovulation test since I had down of those strips left that couldn't be used last month, and this is he result. Can you ovulate twice in a month? This was my first month using ovulation tests and my second cycle of Mirana so I'm still trying to figure out my cycle. Thanks in advance for ANY insite.