It is not certain that you will get pregnant if you have intercourse on the fifth day after your period is cleared. If you are not planning to get pregnant, you need to wear a condom or you can take emergency contraceptive pills afterwards to be on the safe side. Normally a woman ovulates one egg a month, but it is possible to ovulate additional eggs. Ovulation is usually about 14 days before the next menstrual period, regular menstrual period of women is also in the menstrual period after the clean 10 days or so ovulation, the menstrual period after the clean fifth day of coitus although the chances of conception is not high, but there are also a few chances of. In order to avoid unwanted pregnancy, it is important to use contraception during intercourse. If you don’t take contraception, you can take emergency contraceptive pills after intercourse to prevent conception, but emergency contraceptive pills can’t be taken frequently, don’t take emergency contraceptive pills more than twice in a year. Once a woman’s period is delayed for more than a week, she needs to consider the possibility of unwanted pregnancy and should seek medical attention.