Though there are many potential side effects of Clomid, most women experience none or only a few. Some women experience hot flashes, mood changes, irritability, insomnia or visual symptoms. In addition, ovulation can be associated with pelvic pressure or cramping, which can continue throughout the cycle.
Clomid also has an increased risk of twins (approximately 5 to 10%) since more than one egg may be released, however, the incidence of triplets is exceedingly rare (less than 1%). Hyperstimulation can occur if you have an unusually sensitive reaction, but is extremely rare.
If you are on the drug and have concerns about side effects, call to discuss these concerns. The incidence of birth defects, stillbirths, or even miscarriage is not increased with Clomid. The risks to you are also felt to be negligible, and the overwhelming weight of evidence does not support any increased risk of cancer, early menopause, or pregnancy complication.