What can be initial symptoms of ovarian cancer?

Non specific: Symptoms of ovarian cancer are not specific. They often mimic other common conditions. These may include: abdominal pressure, fullness, swelling or bloating, pelvic discomfort or pain, persistent indigestion, gas or nausea, changes in bowel habits, such as constipation, changes in bladder habits, including a frequent need to urinate, loss of appetite or quickly feeling full, and low back pain.