Ovulation: If the woman has no issues with fertility, no drugs are administered to assist ovulation. If there are any, then fertility drugs are given, which induce ovulation.
Detection of ovulation: The careful monitoring of ovulation is necessary to identify the maturity level of the eggs. It is done by a blood test, which checks for the level of luteinizing hormone in blood, characterized by its higher levels during ovulation(14th day of 28 days cycle).
Washing of sperm sample: The sample of sperms is washed or screened to identify the highly motile ones separating it from the fluid around. It also involves removal of toxins from the semen sample, which might induce allergic reactions in some woman. Thus a healthy sperm is chosen for fertilization.
Placing the sperm inside the uterus: After identifying the fastest moving sperms, they are placed on a catheter which is inserted into the uterus, placing the sperms near the fallopian tubes. This increases the probability of formation of embryo.
The following video gives a complete explanation of the process which is followed in every IUI cycle.
There are no fatal side effects of IUI, however sometimes multiple births, gestational diabetes, pre-mature delivery could be major aftermath. The minor ones include pain during the process, but the chances are less. Cramping is the most common side effect. If hormones are given post the procedure then hot flushes, mood swings, swelling of ovaries, discomfort, nausea etc could be some of the visible symptoms.