Do contraceptives have side effects?

General contraceptives are there will be side effects, side effects occur and take the physique of the drug and other factors. The first case is a small amount of vaginal bleeding, after eating contraceptives, vaginal bleeding phenomenon disappeared for about three months. If long-term bleeding recommended to regular hospital treatment. Because if there is continuous massive bleeding, it is likely that the endometrium is thinner and other reasons, taking contraceptives will also show some other digestive system damage, such as nausea, vomiting and other performance. Therefore, it is recommended to take the time before going to bed to minimize the occurrence of this side effect. Of course, if more than three months to see a doctor in time.