Hcg Trigger Shot

Elsa. • 25 years young, TTC for over 2 years now
I went to the doc and got an ultrasound Wednesday I have a dominant follicle on my right side but it wasn't all matured yet so I'm going in tomorrow to get the trigger shot, will the shot make the follicle rupture and release the egg? Help lol And should I start taking ovulation tests after the shot?