<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing weight gain, infertility, cramps and spasms, and intermenstrual bleeding. What could be the problem?  <response>: Based on your symptoms, you might be suffering from Polycystic Ovarian Syndrome PCOS. This is a hormonal disorder that affects the ovaries and can cause irregular periods, weight gain, and difficulties in conceiving. 