Not wearing a bra for a year?

so I havnt worn a bra for a year and for the last few months iv had pain from my shoulder blade to my shoulder under my arm down my arm and my left breast which is heavier than my right and into my ribs now I went to my doctor I was afraid it was cancer and he had a feel and said he couldn't feel anything all... show more so I havnt worn a bra for a year and for the last few months iv had pain from my shoulder blade to my shoulder under my arm down my arm and my left breast which is heavier than my right and into my ribs now I went to my doctor I was afraid it was cancer and he had a feel and said he couldn't feel anything all my symptoms went away while on my period but the day I finished it started again could it just be a pulled muscle ? the top side of my breast feels stiff like a pulled muscle and as soon as I put pressure on my shoulder blade it starts up please help me
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