Women taking the pill can have the following hazards: 1. Because the pill is a combination of estrogen and progestin, it will change the thickness of the endometrium, and if you take the short-acting pill for a long time, it will make the endometrium thinner and reduce the amount of menstruation, and even the possibility of amenorrhea. 2. Because the short-acting pill contains estrogen, estrogen will lead to water and sodium retention in the body, so it will make women gain weight and become obese. 3. 3, if you take the pill, because there is estrogen will make the skin of the face appear discoloration, so it is also recommended to take short-acting contraceptives at the same time can take oral vitamin C, because vitamin C has a whitening effect, will reduce the phenomenon of facial discoloration.