Hello, menstrual cramps, that is, contraceptive success, under normal circumstances, only once a month to menstruation. You suspect that you have menstruated twice a month, and one time should be called withdrawal bleeding, not menstruation. First of all: Look at how long your menstrual cycle is. If it is regular and it is about 30 days, it is normal. In addition, one of the side effects of emergency contraception is menstrual disorder. Menstruation is usually delayed when it is about to come or in the second half of menstruation. From this point of view, it may not be menstruation. Secondly: as long as the amount of bleeding is more than one-third of the usual menstrual flow, it can be regarded as menstruation, otherwise, it may be withdrawal bleeding. Again: Withdrawal bleeding is usually black (blood is oxidized), and bright red blood may be menstruation. Generally speaking, judging whether it is menstrual bleeding or withdrawal bleeding depends on the comparison between the amount of bleeding and the blood volume of your usual menstrual cramps. Less than one third is more likely to be withdrawal bleeding and more than one third is menstruation.
Different emergency contraceptives have different side effects. I suggest you take Danmei, which is a patented emergency contraceptive in China and has the least side effects.
The contraceptive effect of Danmei is also the best, reaching more than 98.5%.