5 weeks pregnant suddenly flowing pink blood may be a pre-eclampsia, ectopic pregnancy, biochemical pregnancy, cervical polyps and other reasons, through the drug birth control, conservative treatment or laparoscopic surgery, observation and other ways to deal with. 1. Pre-eclampsia: 5 weeks of pregnancy, the gestational sac and the uterine wall is not closely connected or the body’s progesterone secretion is insufficient, may lead to pre-eclampsia, from the uterine wall after the stripping of small capillary rupture triggered pink bleeding, go to the hospital to check the development of the embryo in the uterus, through bed rest, intramuscular injection of progesterone and other medications to protect the fetus treatment. 2. Ectopic pregnancy: 5 weeks pregnant pink bleeding may be ectopic pregnancy, more common is tubal pregnancy, it is recommended to go to the hospital to confirm the diagnosis, according to the individual choice of drugs conservative treatment such as methotrexate or laparoscopic surgery. 3. Biochemical pregnancy: 5 weeks of pregnancy biochemical pregnancy, sperm and egg meet to form a fertilized egg, but did not normally bed in the uterine cavity, the beginning of the bleeding is relatively small performance of pink, and then the bleeding will gradually increase, this kind of situation does not need special treatment, temporary observation, pay attention to perineal cleanliness and hygiene. 4. cervical polyps: 5 weeks pregnant with cervical polyps women, due to the body’s hormone levels continue to increase, will induce cervical polyps continue to grow, stimulated by external or internal factors may cause bleeding, early pregnancy can be observed, the pregnancy of late surgical removal treatment. There are many reasons for bleeding in 5 weeks of pregnancy, and the above medications should be used in accordance with the doctor’s instructions.