The reason you had D&C (dilatation and curettage) is important to tell whether ovulation is expected soon after D&C.
D&C is used in several cases: to resolve abnormal uterine bleeding; to remove the excess uterine lining in women who have conditions such as polycystic ovary syndrome; to remove tissue in the uterus that may be causing abnormal vaginal bleeding; including postpartum retained placenta; to remove retained tissue in the case of a missed or incomplete miscarriage; and as a method of abortion that is now uncommon. In most of these conditions there is a change in the normal hormonal levels in the blood. In these conditions it might take some time for the hormone levels to return to the previous stage in order to reestablish the normal menstrual cycle including both normal ovulation and normal menstrual period.
You might want to visit your gynecologist for laboratory hormone tests and pelvic examination of the uterus in order to check for certain conditions that still prevent your body from reestablishing the normal sexual hormone fluctuations.