ovulating on my own 2 failed cycles on letrozole 2.5mg plz help

Maggie

my tests show tbat im ovulating well amd i had a chemical preg in june..my obgyn prescribed me with 2.5mg days 2 to 6 that i tried 2 cycles but didnt get preg..

my obgyn discussed to up the dosage to 5mg..im concerned if im ovulating so taking 5mg does it make sense??or will it make any difference plz do share some good success stories