Tested Out Trigger at 8DPO

I gave in and tested at 8DPO to test out my trigger and also see what would come up. It was negative. Should I be worried about that? I haven’t had any symptoms at all. Ugh, I’m worried my second

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

was a failure. What do you guys think? I tested with the one minute First Response in the green wrapper. Are those super sensitive like the pink wrapper ones? I’m trying not to freak out!