Health issues. To spine or lungs?

Hi 27f .I have been not keeping well since aug iam having upper back just back of breast and breast pain when I bend and raise up it became severe since 2 months very much in the morning and also iam feeling heaviness in head and if I sit continous I am having upper back pain and fatigue feeling.I have done all blood tests cbp crp thyroid serum creatinine serum uric acid lft lipid vit b12 nt pro bnp calcium sodium Pottasium all are normal vit d3 is 15 iam using vit d3 capsules since one months weekly once and will continue it till 6 months.recently I attended a wedding when I went on stage for clicking pictures I was having some shivering and different weird feeling I never had this before .I took eeg test it is also normal .iam having shivering also sometimes .plz help what may be the reason is it related to spine or lungs?for brain I have done eeg what tests should I undergo..