Over the past year and a half I have been having very heavy bleeding, bloating, irregular periods (they were coming every 10-14 days), and weight fluctuations. My doctor checked my thyroid and did an transvaginal ultrasound. The ultrasound showed that the lining of my uterus was very thick and this was just 2 days after I had finished my last period. My doctor put me on two rounds of progesterone and if the symptoms went away she said my system would be ok again. It seemed to work, but two months later my symptoms started back up. She then put me back on birth control, but after doing some reading I felt I needed to ask if there was more testing that I should have asked for. Is there a chance that this could be cancer? Any information would be appreciated.