I have a pain in the middle of my chest plate area, and in the past, I ve been diagnosed with pleurisy. I m not sure if that s what causing that, but yesterday, it was fine. I m not sure if sleeping in the wrong way may have caused that, but it s been bothering me when I lift up my arms, or when I breathe a bit deep. It s like there s a pressure in the middle of the chest plate area when I breathe deeply. I m 20 years old, and 200 lbs. I m 5 7.