These are the most common and usually subside after the body adjusts to the change in hormone levels. Many women have no side effects at all. If side effects become intolerable, consult your clinician. As with other medications, there are certain risks but serious problems are relatively rare. The most serious risk to the Pill is abnormal blood clotting.
Cigarette smoking increases the risk of serious adverse effects on the heart and blood vessels.
Women who use the pill should not smoke. There is no clear evidence that Pill users have an increased risk of cancer. For healthy women under 50 years of age, the benefits of the oral contraceptive usually far outweighs the risks, because the pill protects against such life threatening conditions as ovarian and endometrial disease and ectopic pregnancy. The pill does NOT cause infertility although there may be a short delay in the menstrual period restarting after a women stops the pill. Have your blood pressure checked between the first 3 and 6 months you are on the Pill.