I noticed one day that I had a horrible pain in my right side under my chest. A couple days later it traveled to the middle of my chest and left shoulder blade. The pain is so severe that when I cough I have to hold my chest and bend over to try and get through the cough. I also have noticed that my right ankle/leg is quite swollen. It's been about 3 weeks since it started and only getting worse. I happen to come across the symptoms of Pericaridtis and they describe mine perfectly.