Aunt usually stands in for menstruation. Ovulation on the 14th day of the test paper white plate menstrual feeling strong may be not pregnant, but not absolute, but also may be a shorter time to conceive did not detect pregnancy. Women who have intercourse without contraception in the ovulation period may be pregnant, ovulation on the 14th day of test paper test white plate, and have a strong feeling of menstruation, it is likely that the success of the conception, you can relax and observe the situation of menstruation, such as normal menstruation indicates that there is no pregnancy. However, a single test paper test whiteboard is not certain that is not a successful conception, may also be fertilized eggs in the bed late, the HCG content in the urine is low, resulting in a negative test paper results, and some women in the early stages of pregnancy may also have a slight abdominal pain or lumbar pain, breast pain and swelling and other signs similar to the menstrual period, was mistaken for the imminent onset of menstruation. It is recommended that patients go to the hospital in time to draw blood to check the blood HCG, in order to clarify whether the pregnancy, usually one week after intercourse can check the pregnancy.