I am starting <a href="https://glowing.com/glow-fertility-program">IUI</a> and am trying to get a positive ovulation test. I'm using Clearblue, and I know they say not to go off of the strips on the back, but my doctor says they can be useful. The top test is from yesterday, middle is at noon today, bottom is this evening. As you can see, it went dark, light, dark. Anyone have any experience with this? I'm not on medicine, and it's Day 17. I don't want to miss my surge.