Letrozole and ovulation

Toto

I wanna know from all experienced people out here. My gynec advices me to take letroxzole and ch class with ovulation predictor kit at home when I asked him to do ovulation study by ultrasound he said gyne don’t do it for that I need to go to fertility specialist. So last cycle we did not get any success for BFP. Now today is my day3 for next cycle and and I asked my gyne from my country he said don’t take letrozole as ur doctor should have govern you a trigger injection and sonography. If I take letrozole again high chance of cyst on ovaries. I am so confuse and lost not sure should I start letrozole today??? Anyone who have gone through letrozole multiple times with success please share your story and help me I will appreciate your help from bottom of my ❤️