IUI trigger shot confused :/

Teresa
Does anyone have any experience with <a href="https://glowing.com/glow-fertility-program">IUI</a> with trigger shot 10000units...trigger was 11 days ago <a href="https://glowing.com/glow-fertility-program">IUI</a> was 9 days ago...I've been testing the trigger out fmu (4) negative first time since trigger...then I took another test around 12 4b and then another just now 4c...what the heck why would it be so positive at 12 after being completely neg with fmu??? And the third is a squinter but it's there...I know all I can do is what but if anyone has any opinions or words of wisdom I will take them...tww is the worst