Hello, My Concern Is The Constant Pain I Am Feeling

Hello,
My concern is the constant pain I am feeling on the right side of my chest and my breathing being a bit short. I did go last week to ER and was fine by what ECG and blood work showed. Since then my results from a non contrast MRI showed some abnormalities. Reason for MRI was due to neck pain I have had for close to year....but during test two things showed up. One was a paraspinous lesion at the t4. The second finding was pericardial cyst near heart??? What exactly a pericardial cyst?? Could this be was is causing the constant pain?? Can not see a specialist for another month and pain is becoming so bothersome in my everyday life. Help....