Trigger Shot

Hi, does anyone know if it matters if the trigger shot is injected with the needle all the way in or is halfway in okay? needle is 2inches long.

I've been having a friend help me with the shot because my husband can't handle sticking me with a needle and it's in a spot I can't reach well. we are a week away from my 4th IUI and she asked if it matters because she's only been pushing it in about half way. And I never thought to check the next day with a test to see if it was in my system or not.