Sudden bleeding in 5 weeks of pregnancy ultrasound says it is stale blood, take rest, regular checkups and follow doctor’s advice for fertility preservation treatment. Stale bleeding at 5 weeks of pregnancy may be intrauterine stale bleeding caused by a small amount of bleeding at the time of fertilized egg implantation. It may also be caused by insufficient progesterone levels, chromosomal abnormalities, viral infections and other causes of fetal preeclampsia. 1. Attention to rest: 5 weeks pregnant with old bleeding, should pay more attention to bed rest, during the period can not do too heavy physical labor or should not have sex. 2. Regular checkups: If you are 5 weeks pregnant and have old bleeding, you should go to the hospital for regular ultrasound checkups to see if there are yolk sacs, fetal buds, fetal heart development, whether the old bleeding is gradually absorbed, and whether the amount of bleeding is increasing. 3. Foetus preservation treatment: 5 weeks pregnant with old bleeding can be under the guidance of the doctor foetus preservation treatment, bleeding gradually increased may develop into inevitable abortion, timely termination of pregnancy. During pregnancy, pay attention to more rest, at the same time should relax, avoid tension, anxiety, any discomfort should be timely to the hospital, the doctor clear diagnosis, and cooperate with the doctor symptomatic treatment.