You can take emergency contraceptive pills after having intercourse right after your period, but you should know the contraindications before taking this pill. 1. not for people with high blood pressure, heart disease, nephritis or severe liver or kidney function impairment. 2. not for women older than 40 years old. 3. not for people with genital tumors, breast lumps or high risk of blood clots. The method of taking emergency contraceptive pills is very simple: take the first pill as early as possible within 72 hours after intercourse, and take the second pill after 12 hours, because these emergency contraceptive pills contain a lot of hormones, so the side effects are more serious, such as irregular vaginal bleeding or contraceptive failure and increased risk of blood clots after taking them. Therefore, it is important to know your situation and contraindications before taking the pill.