If you have had multiple unprotected sexual relations during the week, it is recommended to consider taking emergency contraception (Plan B). This type of contraception can prevent pregnancy if taken within 5 days of unprotected intercourse. If the unprotected sexual relations occurred more than 5 days ago, emergency contraception may not be effective. Another option to consider is the copper intrauterine device (IUD), which can be inserted up to 7 days after unprotected intercourse to prevent pregnancy. It is important to consult a healthcare professional, such as a doctor or clinic, for guidance on which option may be best for you. Regardless of the contraception method chosen, it is also recommended to take a pregnancy test if your menstrual period is late. It is important to stay informed about your reproductive health and seek medical advice when needed.