dull ache in left chestconstant dull ache in chestpersistent dull ache in chestdull ache in middle of chestdull ache in centre of chestdull ache in chest near heartheavy dull ache in chestchest pain dull achedull ache in upper back and chestdull ache in chest areadull ache in chest and left armdull ache in chest for days