I've had a persistent cough for over two months now. It all began with painful swelling on the backs of my hands. I had a high fever that went away after taking medicine for five days, but the cough stuck around. Now I'm experiencing chest pain and shortness of breath with even a little activity, and the pain has moved to a sharp lung pain below my chest. I saw a pulmonologist, and my CT scan was normal, although my WBC count was a bit high. Today I went to a gynecologist because of lower abdomen pain and found out I have a left ovarian cyst. What could be going on? I'm really worried about how all these symptoms tie together. Is it something serious?