A woman who experiences bleeding in her early pregnancy may just really have a condition referred to as a subchorionic hematoma (SCH). SCH is a pool of blood beneath the chorion or placenta which develops naturally as an embryo implants into the uterine lining.
Even as bleeding in early pregnancy could also be interpreted as a sign of impending miscarriage and must be shared with gynecologist. Such kind of miscarriage is common where the complications are more. During the developmental phase of embryo there might be some leakage of blood due to number of underlying factors. If blood supply becomes insufficient to provide adequate amount of nutrients to embryo then there might be chances that embryo becomes dead at some point of pregnancy.
In some instances, a SCH would lead to miscarriage depending on dimension and vicinity of the hematoma in terms of the embryo. Generally it should be considered as your good luck if you have subchorionic hemorrhage in small amount because large amount of subchorionic bleeding may cause separation of gestational sac from uterine lining resulting into increase risk of pregnancy loss. Moreover, bleeding for longer duration of period is another factor that plays important role in pregnancy complications. So, it is strongly recommended that always consult your health care provider whenever you have such kind of symptoms.
The incidence of SCH is virtually equal between fertility patients and those that have conceived via medical procedure. However, if a patient uses blood thinners like aspirin or heparin, they would be rather more inclined toward a subchorionic bleed due to blood thinning effect of medications. About 30-40% of patients suffering from subchorionic hemorrhage does not discrete its symptoms form other kind of bleeding making it more complicated.
As far as pregnancy is concerned, your health care provide must inform you about the possible risks of bleeding and other possible complications even if you have conceived without medical procedure. Distinguishing the symptoms of subchorionic bleeding earlier makes it less vulnerable to create further complications and healthy pregnancy outcome. Similarly, delaying to get prompt medical intervention in such cases increase the risk of complications.
It is main obligation of your health care provider to make you well aware of all possible complications that might happen in your pregnancy and describe some cardinal manifestations of those complications for your better understanding in case of emergency or where the prompt surgical or clinical intervention might be required without delaying further.