Letrozol pcos

Maria

I have pcos and going on my second round of letrozol if I start my af today she’s still a no show hoping I don’t start, when should I test?

I was supposed to do my sonogram last month to check for a follicle and hope to get the trigger shot

but had to reschedule to this month.

So confused if hopefully it worked even though I didn’t do the trigger shot last month.