Can ovarian cancer get worse with stress and/or nervousness?

Stress never helps: There is little scientific evidence that stress is actually physically harmful, and i would imagine that it would be difficult to design such a study. Having said that everybody knows someone whose medical problems seemed to get worse because of stress. I would advise you to minimize your stress levels, if possible. Your circumstances are out of your control. The key is how you handle them.

Stress and Cancer: You might want to read ==>http://www.Scientificamerican.Com/article.Cfm?Id=does-stress-feed-cancer. At least in this one study, the investigators concluded that chronic stress can "feed" cancer cells and help them grow. This is controversial, but, as a general rule of thumb, it is best to address the stressors and seek some kind of relief, if possible, although living with cancer is very hard.