Vaginal bleeding that occurs five days after taking the emergency contraceptive pill is a side effect of the drug, also known as withdrawal bleeding. Emergency contraceptive pills contain highly effective progesterone, which inhibits ovulation to achieve the effect of contraception. Many women will experience vaginal bleeding about a week after taking the pill, but this bleeding is usually small and long-lasting, and usually stops within a week, which is a side effect of the drug. This emergency contraceptive pill is relatively easy to take, so now many people take this emergency contraceptive pill as a regular contraceptive method, but it is not right to do so. Because of the high hormone content in this emergency contraceptive pill, there are some people who are not suitable for taking it, such as people at high risk of blood clots, people older than 40 years old, people with heart disease, and people with impaired liver and kidney function, these people are not suitable for taking this emergency contraceptive pill.