9 days post IUI with trigger shot

Hi everyone, I am 9 days post IUI I took a trigger shot 11 days ago. I took my first at home pregnancy test 7 days post DUI (I know it’s too early) and there was a faint line. 8 days post IUI there was an even fainter line. Today at 9 days post IUI there’s no line…. Is this a sign that IUI wasn’t successful??? I have read a lot about testing out the trigger shot. I’m curious is this around the time that most peoples trigger shot leaves their system and when would a positive pregnancy test come up if so? Or is a negative test at this time bad?