Letrazole

H

Hi everyone

I am on my 2nd cycle of letrazole. First cycle I was monitored with ultrasound scans which confirmed it worked however this cycle they said this wasn’t necessary and to got for progesterone blood test 7 days after ovulation I am now on cycle day 20 and haven’t had a positive ovulation test so really unsure when to go for bloods any help or could it mean I haven’t ovulated?