Please reply hi. I have an protected sex (by using precautions) near the day of expected ovulation. After that I took regestrone for 10 days upto 12th march as a contraceptive pill. But my periods have not come yet. As there are more than 5 days I stop taking regestrone. I do not want to get pregnant. But I did not get withdrawal bleeding till now. How many days after taking regestrone I will get my bleeding. My normal cycle date is 20 th march.