Has anyone ever had a faint negative line 16 days after

<a href="https://glowing.com/glow-fertility-program">IUI</a>

? Can it be a false negative? This would be my 3rd

<a href="https://glowing.com/glow-fertility-program">IUI</a>

and I felt very different with this one in a positive way. I’m so confused, we’ve been trying for so long I just hope it was a false test 😩 praying for a positive test 🙏🏼