HELP! Question about trigger shot!!

Hi, ladies. A quick question. Is it normal for the test line to still be this dark 12 days after the trigger shot? I’ve been testing it out and the line hasn’t changed much in 3 days. And oddly enough, when I test with FMU, it’s usually lighter than when I test later on in the day. **I took the photo a little bit past the window (about 10 minutes later) , but the line was there before It started drying**