Uterine fibroid - Uterine fibroids are of unknown origin. They can grown is size and impede growth of fetus. Overweight and being African American are risks factors.
Endometriosis affects the woman's uterus. It is where the material that usually lines the uterus grows elsewhere ,including bladder, behind the uterus, or even bowels. It is extremely painful and can lead to infertility.