Most of the advises are based on guidelines and recommendations and personal experience of your doctor.. In life there is probability of things that it wl happened or not. So, by advising progesterone support she is decreasing probability of mishaps and it is safe also..

It’s usually given to support pregnancy. The rationale behind it is if patient has luteal phase defect where there is deficiency of progesterone, the outcome of IUI is not favourable. When you have spent good amount for the treatment ie IUI , it’s rather advisable to spend some more for good chances of having positive outcome. In medicine, all is not black and white, sometimes it’s grey too ! Wishing you good luck with the treatment.

Every one who conceived with assisted reporduction needs a Luteal phase support