Ovulating or about to or not ovulating

The same test had one line only yesterday, I know the manual says this is negative but I am wondering if this is an indication that I may get positive tomorrow. Asking AS we are planning <a href="https://glowing.com/glow-fertility-program">IUI</a> this month and have to notify clinic but they dont accept natural <a href="https://glowing.com/glow-fertility-program">IUI</a> over the weekends which would mean we will miss the window due to abstinence at home and also miss clinical <a href="https://glowing.com/glow-fertility-program">IUI</a> process thereby missing this cycle completely.