How many days is still ok to do booster? Everywhere I read they say to do it 7 days after trigger, but I have to wait till tomorrow for mine to come in mail and I will be 9 days past trigger. Nurse says its ok, but I just wanna be sure. This is my 1st IUI cycle. I did gonal f 75 ml x 5days then 500 ovidrel and now 250 ovidrel booster. Thanks. Any help is greatly appreciated.