13 dp trigger shot and line got lighter

I am 13 dp trigger shot and 12 days post

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

I took a test yesterday morning and got a dark positive and I just took another one 5 pm this afternoon and it’s a little bit lighter but there. Does that mean anything ? My husband says it’s the trigger shot but this many days after ?