Patient's question:
Sure, here is the translation of the content you provided:```
No
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Doctor's answer:
It may be caused by threatened miscarriage. There is a history of missed periods, and the urine pregnancy test is positive, confirming pregnancy. In this case, if vaginal bleeding occurs, or accompanied by lower back pain and abdominal pain, it should be considered as a threatened miscarriage. Additionally, bleeding during pregnancy is also common in pregnancy complications, which can also cause vaginal bleeding.