Can you have cancer of ovaries if you do not have ovaries? Perhaps, your ovaries were taken out during a hysterectomy and you think you are safe? Then read this post:
The authour advocates that you should perform a yearly CA-125 ovarian cancer test, which should be even paid by your insurance (if you live in the USA, that is).
Maybe you should. Or you can ask a medical astrologer to see whether the period for cancer is really due.