Several problems with the placenta later in pregnancy can cause bleeding: Placental abruption—In placental abruption, the placenta detaches from the wall of the uterus before or during birth. The most common signs and symptoms are vaginal bleeding and abdominal or back pain.
https://www.acog.org/Patients/FAQs/Bleeding-During-Pregnancy
Bleeding in the first trimester happens to about 15–25% of pregnant women. Light bleeding or spotting can occur 1–2 weeks after fertilization when the fertilized egg implants in the lining of the uterus. The cervix may bleed more easily during pregnancy because more blood vessels are developing in this area.
https://www.acog.org/Patients/FAQs/Bleeding-During-Pregnancy
Bleeding During Pregnancy. Vaginal bleeding during pregnancy can occur frequently in the first trimester of pregnancy, and may not be a sign of problems. However, bleeding that occurs in the second and third trimester of pregnancy can often be a sign of a possible complication. Bleeding can be caused by a number of potential reasons.
http://americanpregnancy.org/pregnancy-complications/bleeding-during-pregnancy/
Even so, many pregnant women say that they feel healthier than ever. Being tired is common during pregnancy. Most women feel tired the first few months, then again toward the end. Exercise, rest, and a proper diet can make you feel less tired. It may also help to take rest breaks or naps every day.
https://medlineplus.gov/ency/patientinstructions/000583.htm
Since bleeding that occurs in the first half of pregnancy is so common, many wonder what the causes are besides some of the complications already mentioned. Bleeding can occur in early pregnancy due to the following factors: Implantation bleeding can occur anywhere from 6-12 days after possible conception.
http://americanpregnancy.org/pregnancy-complications/bleeding-during-pregnancy/
Common symptoms during pregnancy. Growing a baby is hard work. Your body will go through a lot of changes as your baby grows and your hormones change. Along with the aches and pains of pregnancy, you will feel other new or changing symptoms.
https://medlineplus.gov/ency/patientinstructions/000583.htm
Several problems with the placenta later in pregnancy can cause bleeding: 1  Placental abruption—In placental abruption, the placenta detaches from the wall of the uterus before or during birth.  Placenta previa—When the placenta lies low in the uterus, it may partly or completely cover the cervix.
https://www.acog.org/Patients/FAQs/Bleeding-During-Pregnancy
Problems that can cause bleeding in early pregnancy include infection, early pregnancy loss, and ectopic pregnancy. Loss of a pregnancy during the first 13 weeks of pregnancy is called early pregnancy loss or miscarriage. It happens in about 10% of known pregnancies.
https://www.acog.org/Patients/FAQs/Bleeding-During-Pregnancy
Common problems that may cause light bleeding later in pregnancy include inflammation of or growths on the cervix. Heavy bleeding is a more serious sign. Heavy bleeding may be caused by a problem with the placenta. Any amount of bleeding also may signal preterm labor.
https://www.acog.org/Patients/FAQs/Bleeding-During-Pregnancy
Having a hard time moving the bowels is normal during pregnancy. This is because: 1  Hormone changes during pregnancy slow down your digestive system.  Later in your pregnancy, the pressure from your uterus on your rectum may also worsen the problem.
https://medlineplus.gov/ency/patientinstructions/000583.htm
how common is bleeding during pregnancy
The Bleeding can occur in early pregnancy due to the following factors and Implantation bleeding can occur anywhere from 6-12 days after possible conception.