I have a moveable painless mass on top of my upper left side but toward the middle of my rib cage.?

R/O LIPOMA. If the lump is on the rib cage and movable it is less worisome and may be a lipoma. You need a Ultrasound ito evaluate for /CYST/LIPOMA/less likely clot Please seek prompt evaluation for this issue if symptoms persist or worsen. Or other lesions develop .