horrible shoulder pain when barbell bench pressing

[KINGJAMES23]

For the past few weeks I've been having terrible pain in my shoulders whenever I flat barbell bench press. I don't know why because I don't experience shoulder pain when doing anything else, like directly working my shoulders or db bench pressing. What's wrong with me and how do I fix it ?

[miketl]

u may not warm up enough and flare ur elbows out to far.