Is emergency contraception equivalent to curettage?

Emergency contraceptives are not equivalent to curettage, depending on whether emergency contraceptives are taken orally in the first half of menstruation or in the second half of menstruation. If taken orally in the first half of menstruation, emergency contraceptives are highly effective progestins, which can thicken the endometrium. The thickened endometrium loses the support of exogenous progestins after stopping the drug, and it will show withdrawal bleeding, which is understood as curettage. And in the second half of the menstrual period when oral, the second half of the menstrual period due to the influence of fertility hormones, the endometrium has begun to thicken, when exogenous progesterone into the body, has little effect on the thickened endometrium, so then eat emergency contraception is likely not to show withdrawal bleeding, so it will not play the role of drug curettage.