I have been having slight testicle pain. i went to the doc and he said i should wear a jock strap. i now have a swollen cord. is it stress? or torsion

See below: If you are having significant testicular pain, get seen now! torsion, epididimytis , other issues need to be investigated.

Go to the ER now...: Testicular pain is a seconds to minutes emergency and you must rule out testicular torsion, which is a twisting of the vessels leading to the testicle. If not corrected by surgery immediately you will lose your testicle if in fact there is a testicular torsion. There are other less emergent problems that need to be taken care of like epidydimitis, but you need to rule out a torsion first.