Clomid & HCG trigger shot?

Meg • TTC after losing our baby girl at 37 weeks 👼🏻
I'm starting my 3rd round of Clomid tomorrow and my dr wants me to also get the HCG Trigger shot this month. He'll be monitoring my follicle sizes on days 13 and 14 and I'll get the trigger shot after that.
He said the next step is a laparoscopic exploratory surgery to check for  endometriosis. I've had three other children successfully with my ex husband and have had four miscarriages. My 2nd marriage now is going great besides trying to have our last baby. 
Do you ladies have any advice or stories from your own experiences? I really appreciate it!