The American Congress of Obstetrics and Gynecologists (ACOG) states that large uterine fibroids, also called leiomyomas or myomas, refer to abnormal growths within the muscles of your uterus (womb). These can be present inside or on the outer wall of your uterus. At times, these fibroids can be connected to a stalk. Large fibroids can be about 5 to 6 inches wide. In fact, ACOG states that large fibroids can wreak havoc on your body and fill your stomach and pelvis.
Menorrhagia
Large uterine fibroids can lead to menorrhagia (heavy menstrual bleeding), states the Mayo Clinic. During a normal menstrual cycle, you may lose 30 to 44 milliliters of blood within 4 to 5 days. With menorrhagia, you may lose approximately 81 or greater milliliters of blood within 4 to 5 days. Signs of heavy menstrual bleeding include soaking one or more tampons or sanitary pads every hour. Your menstrual cycle may last for more than seven days and you may notice large blood clot formations. Anemia, a condition characterized by trouble breathing and fatigue, can also develop due to the massive amounts of blood loss.
Infertility and Miscarriages
According to ACOG, large uterine fibroids can lead to miscarriages or infertility. Large uterine fibroids can affect your womb's ability to carry a growing baby. In some instances, the fibroids may grow near your ovaries and affect your their ability to successfully release an egg during ovulation.
Painful Sexual Intercourse
Large uterine fibroids can lead to painful sexual intercourse, medically known as dyspareunia. The Mayo Clinic states that burning, aching and a deep pain are some symptoms of dyspareunia.
Pain and Pressure
ACOG states that large uterine fibroids can cause excruciating pain in your stomach or lower back. This pain can be heavy, dull or sharp. These fibroids may compress your bladder and cause urinary problems such as frequent or difficult urination. Large uterine fibroids can interfere with your digestive tract and cause rectal pain and constipation.


