What Causes Amenorrhea And Weight Gain?

I started having some stomach problems about 3 years ago along with the stomach problems I stopped having periods and started gaining weight. I hade my gall bladder removed and a gyn diagnosed me with POCS. I have a hernia in the middle of my stomach and reaccurring ovarian cyst. I am continuously bloated and when I eat it gets much worse. Is this related to any of the things that have already been diagnosed?