Trigger shot? Or bfp?

How long does it take for the trigger to leave your system? Today is 10 days past trigger. I tested out the trigger on cheapie tests and it seemed to basically go away. But I don’t know maybe it’s showing up still because FRER is so sensitive. Has anyone had the trigger still in their system 10 days past trigger? This test was taken around 12:30pm on about a 1 hour hold because I was too anxious to wait until tomorrow. Line is pink in person I can’t get a good picture