Hello dear,I understand your concern.In my opinion the bleeding in pregnancy can be due to various reasons like thyroid abnormalities,progesterone insufficiency,low lying placenta,erosion or varicosities of cervix etc.They can be diagnosed by necessary investigations.The bleeding from cervix might not cause harm but continuous bleeding make the patient anaemic.So it might be due to bleeding from cervix or one among the above causes.Definite diagnosis is possible only after physical examination and investigation.There are many cases which have bleeding during pregnancy but continues till term with good outcome. Best regards...Dr.Srilatha