Trigger shot questions

How long after trigger shot did you keep getting dark lines on opks...I had trigger on Tuesday 4/23. And still seeing pretty strong lines on opks not quite as deep but...just wondering I usually test all the way down to a blank test...

Aslo anyone else get trigger shot same day as iui...I ovulate naturally so they did the trigger to help timing...we hadn't originally planned on it but said why not....then I freaked out cuz everything says 12-36hrs before iui. Then found articles about after may improve success since I can normally ovulate on my own...

Also did anyone else bruise after their shot?