I have been having acute pain on my left side about the middle of my ribs. At first I thought I must have slept wrong, and caused this pain. However, the pain has not lessened at all in the week, and now seems to be getting worse. The last three night I have had pains up to my heart and it feels as though my heart is being squeezed. This pain is only on the right side, and at night it gets worse causing the pain in the heart area, and around. The pain in my ribs is constant through the days whether I am sitting. standing, walking, running...etc. does anybody have any ideas as to what this may be?