Hello welcome to the health care magic You have sexual intercourse around 14 days of menstrual cycle... And it was unprotected Hence we cannot neglect possibility of pregnancy Emergency contraceptive pill needs to be taken for preventing pregnancy within 72 hour of sexual intercourse... After 72 hour pill not effective.... One single dose of levonorgestrel 1.5 mg can be effective in preventing pregnancy Another method is to take 0.75 mg dose levonorgestrel and repeat it after 12 hour... If 72 hours passed then IUCD (copper containing) effective if used(inserted through cervix) within 5 days of unprotected intercourse After gynecologist consultation you can choose any of the above method Next time use Barrier method while doing intercourse Take care Hope your concern solved