Clomid (clomiphene) can be recommended for female patients that are unable to have a child because her ovaries do not produce eggs. This drug should be taken in cycles and all the directions of your health care provider must be followed for you to benefit from the treatment. Let your doctor know about any for the following conditions you have that can make it impossible for you to take Clomid safely: undiagnosed vaginal bleeding, endometriosis, any chronic medical illness, pregnancy, endocrine disorder, ovarian cysts, uterine fibroids, endometrial carcinoma, thyroid problem, or liver disease. You need to know both mild and more serious side effects are possible. The following ones are commonly experienced mild side effects of Clomid: nausea, flushing, headache, vomiting, blurred vision, abnormal uterine bleeding, breast tenderness, diarrhea, and breast discomfort. They are unlikely to last for too long and usually go away without any need to inform your health care provider. More serious side effects include shortness of breath, visual spots or flashes, double vision, stomach or lower stomach pain, weight gain, stomach swelling, and blurred vision and need to be reported to your doctor right away.