I have experienced the above pain a lot in my life it is actually one of my symptoms I get during my period . It's always the same for me . Coming on pain under arm,across chest at times finish my period it all goes well this month I noticed for one my period was different only lasted a few days out of my usual 7 ! Amd the pain didn't go .

I also get this pain with certain deodrants which when this happens I stop using . I did read certain deodrants (sprsy) can do this to you're lympth nodes .

There is no lumps or chamges I have checked sofas my partner . I make sure they check everything including back and shoulder they say it's the same on both sides.  If course have panicked myself googled the hell out of all this .I just really want some advise I struggle with the GP I have medical anxiety and haven't been for over 4yrs .

I admittedly have been a but stressed lately over thinking a lot of things and maybe all this is just stressing myself out .

Any advice please