Having the urge to urinate frequently is a commonly reported symptom of ovarian cancer. It is however usually combined with other symptoms. A woman may feel the urge to urinate right after just emptying the bladder, or just have the urge to go a lot. It can even wake a person up in the middle of the night.
I blamed having to go a lot and feeling like I had to go on a weak bladder. I went to the doctor and there was no infection, so he told me child birth was probably to blame and to do Kegel exercises. When it finally started to wake me up in the middle of the night, I was sent in for an ultrasound. A mass was found on my ovary. I was diagnosed with ovarian cancer two weeks later.
Karen, Jacksonville, FL
Not only is it a really annoying symptom to have, frequent urgency can caused by many things. It is important to see a doctor to get a proper diagnosis.

