Letrezole twice in one cycle?

Has anyone had to take letrezole two times in one cycle after getting your follicle scan and it not being where it needs to be?

I took letrezole on days 5-9 and got my follicle ultrasound done on day 16 as told to do by the doctor after my appointment the nurse called and said they wanted me to take letrezole again starting that night for 10 days and then go back for another follicle ultrasound before I can take my ovidrel.

Has this ever happened to anyone else?

I have taken clomid or letrezole every month for a year now and my follicles always looked ok until now