In the early stages of pregnancy, if there is a little bit of bleeding, and it disappears after a wipe, the most common clinical cause is preeclampsia. The reason why bleeding occurs is mainly because the peeling between the gestational sac and the uterine wall that occurs after progesterone insufficiency, exertion or trauma leads to the rupture of capillaries, so the bleeding occurs, and then it will be gone as soon as it is wiped. In spite of this, it is recommended to go to the hospital for appropriate examinations, such as ultrasound, blood tests, blood clotting time tests, blood HCG and progesterone lab tests, and decide whether or not you need to have a tranquilizer treatment based on the results. And this situation also need to rule out the bleeding caused by inflammation of the urethra, when the urethra has inflammation of the bladder will be congested, can also lead to a small amount of bleeding in the urine, through the routine examination of urine can be identified.