Your uterine and pelvic muscles, tissues and fascia are unbalanced. Think of your uterus like a ballon. As the baby grows, the uterus does too, taking up more and more of your abdominal cavity.
Bleeding may occur at various times in pregnancy. Although bleeding is alarming, it may or may not be a serious complication. The time of bleeding in the pregnancy, the amount, and whether or not there is pain may vary depending on the cause.