I have been prescribed Prostap to down reg on 1st ICSI cycle. My day 21 would have been 8th January but the hospital cant see me then. They are bringing me in early on 28th December to scan me and give me my Prostap injection. I would like to know if getting the injection over a week early is a problem or not. I should have asked them at the time and I know they know what they are doing but I dont know how this affects the grand scheme of things to come i.e are my chances of conceiving less?