First trimester bleeding occurs in about 1 in 4 women. Most of the time it is not a miscarriage but instead due to a small blood clot coming from the implantation of the embryo or early placenta and is called a subchorionic hemorrhage or subchorionic hematoma.
A miscarriage can also cause bleeding and cramping as your body is trying to expel the remains of a pregnancy that has stopped growing. If you do experience a miscarriage there are tests available to help you understand why you may have miscarried. We use in our practice, miscarriage testing from Natera® . Click here to learn more.
A pregnancy in your fallopian tube, commonly known as an ectopic pregnancy can also cause first trimester bleeding.
Rarely, first trimester bleeding could be caused by a cervical polyp. These are small growths on the cervix that frequently grow in the beginning of the pregnancy and can often cause spotting. Your health care provider will often remove them in order to prevent further bleeding. This will usually not affect the pregnancy.