<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi doctor, I have been experiencing cramps and spasms in my lower abdomen for the past week. I also noticed a mass on my vulva, my menstruation has become very infrequent and Ive been having unusual vaginal discharge. Additionally, I experienced some vaginal bleeding after menopause. What could be causing these symptoms?  <response>: Based on your symptoms, its possible that you may be suffering from endometrial cancer. Well need to perform some tests to confirm this diagnosis. 