the most likely causes of your pain would be PLEURISY or COTOCHONDRITIS and both are treated the same way... anti inflammatory meds like motrin. both should resolve within a week or two especially as your cough subsides.
a CT will cinch the deal for you. you do not have a PE by any risk factor criteria and when you add in the labs and studies already done it is just vanishingly unlikely.
please let me know if you have any more questions. if you do not, please click 'accept' so JA will forward my fee to me.