Many cysts will go away on their own and you never are aware you have one. However, ovarian cysts can also cause medical problems such as severe pain, frequent urination if the cyst is pressing on the bladder, painful or pressing bowel movements, pelvic pain during intercourse or right before your period, and even tender breasts. Since you are having very severe abdominal pain, this is a potential medical emergency and you should immediately go to your doctor or an emergency room as cysts can also rupture.