I AM ATTEMPTING TO FIND A PAIN MANAGEMENT DOCTOR. I

I AM ATTEMPTING TO FIND A PAIN MANAGEMENT DOCTOR. I HAVE BEEN ON HYDROCODONE FOR SEVERAL YEARS, HAVE ALSO BEEN ON OXYCODONE AND HAVE BEEN ON MORPHINE BUT HAD TO STOP TAKING IT BECASUE OF SEVERE CONSTI[PATION. MY DOCTOR HAS PRESCRIBED HYSINGLIA 40 MG ER, BUT IT ISN'T DOING THE JOB.