I'm very concerned about my body! I think I might have an ovarian cyst. I can feel a ball on my left lower abdominal, and I've gained weight.

Ball in abdomen. You should call your physician to be seen to diagnosis the ball your feel in your left lower abdomen. There are several possibilities, however a physical exam is necessary.
Ball in abdomen. Perhaps. Check out a abdominal, femoral or inguinal hernia first with a doctor, who is equipped to do a pelvic.