Dear Nonye, Did you meet a registered doctor?? If your urine and blood tests shows negative then may be the reasons are else. Please consult a registered doctor soon about it. Read here also: https://lovematters.in/hi/resource/safe-sex https://lovematters.in/hi/resource/unplanned-pregnancy If you would like to join in on a further discussion on this topic, join our discussion board, "Just Ask” https://lovematters.in/en/forum