Hello, I have gone through your query and understood the concern. Abstinence is advised for a week after the dilatation and curettage, if it is done for examination purpose. If the procedure is done to evacuate a pregnancy or complete endometrium, it is better to avoid sexual intercourse for two weeks. This is to help tissue healing and avoid post coital bleeding and infection. Also, I would suggest use of barrier methods until your next period. Though enough protection is given by the oral contraception, breakthrough ovulation is a possibility subsequent to the procedure. Hope your query has been answered. Wish you good health.