Hi, Althea which contains cyproterone acetate and ethinyl estradiol does not work as emergency contraception. Hormonal contraceptive pills which contain, levonorgestrel alone or in combination with ethinyl estradiol can be used as emergency contraception. So there is a possibility that you may get pregnant from that intercourse. Since you started contraceptive pills in the in the second week of the cycle, they become effective as contraception after 7 days. You can have sex with your boyfriend while taking pills, after seven days of using pills. But I advise you to defer it until next period. It is important to clarify regarding the possibility of pregnancy as you have not used emergency contraception. Once you get your period I advise you to discuss with your doctor and start using regular effective contraception like hormonal contraception or get an intrauterine devise fitted. I also advise you to use barrier method of contraception like condom in addition, to protect yourself from STDs. I hope I have answered to your satisfaction. If you have any further queries do write to health care Magic. I will be happy to answer