Trigger shot or no?

So I have been ttc for 6 months I already have 3 kids naturally conceived fairly quickly but this 4th time I’m having issues. I haven’t ovulated strong enough so I got put on clomid and works great ovulate cd17 each month but no pregnancy so this month I want to try letrozole. I got prescribed 7.5 mg right off the bat. So okay I’m going to do that but is there any benefit for me for a trigger shot if I ovulate good on these medicines ? Like what advantage would it have for me? Experiences are more than welcome TIA