A little bit of blood when you finish urinating in 7 weeks of pregnancy may be a pre-eclampsia, or it may be caused by ectopic pregnancy, cervicitis and other diseases. 1. Pre-eclampsia: The causes of this disease include uterine malformation, uterine fibroids, serious infections, chromosomal abnormalities in the embryo, endocrine function abnormalities, severe physical stimulation, sperm deformities, excessive exposure to chemical substances and so on. The main manifestations are vaginal bleeding, lower abdominal pain and other symptoms before 28 weeks of pregnancy, so there are also some patients who have a little blood when they finish urinating at 7 weeks of pregnancy. 2. Ectopic pregnancy: the cause of this disease is most often seen in tubal pathology, including tubal inflammation, dysplasia, history of localized pregnancy, etc., followed by contraceptive failure, endocrine abnormalities, mental stress, and so on. Generally almost no discomfort in the early days, followed by abdominal pain, vaginal bleeding and other symptoms, which can be manifested as a little bit of blood when you finish urinating 7 weeks pregnant. 3. Cervicitis: The main reason for this disease is that the cervix is infected by pathogens, such as Chlamydia trachomatis, aerobic bacteria, anaerobic bacteria, etc. Other reasons are vaginal flora disorders, hormonal imbalance and so on. Most patients are asymptomatic, but some patients will have abnormal vaginal bleeding, abdominal pain and other symptoms, so there is a little bit of blood when you finish wiping after urinating in 7 weeks of pregnancy, it may be the occurrence of cervicitis. There are many reasons why there is a little bit of blood when you are 7 weeks pregnant, so you need to go to the hospital to find out the exact cause.