question: severe stomach pain    I was previously on oxycontin and valium I was experiencing very severe pain in my abdomen and I was put in the hospital and then they told me that I could have chrones disease and did not confirm it.I am now on methadone and I am in worse pain than when I was on oxycontin and Valium, I was on oxy an Valium for chronic back pain for 5 or more years,then I recently started having severe pain all over my stomach and vomiting and diahreah and severe bouts of sweating and then chills with magor nausea the hospital gastro specialist had me on IV pantoloc and clindamycin and oral motillium.I stopped taking oxycontin and Valium after I was released and started methadone to combat the withdrawal symptoms only to find myself in worse pain than I was previously and not able to pass any stools due to severe constipation, I am going crazy with no sleep because of the abdominal pain .is it possible that my contipation is a result of the change from oxycontin and Valium to methadone alone. my pain is causing chest pain and I am deirious without anysleep for weeks on end with major rectal pain also there is blood present in my urine. the only surgery I have had is my gall bladder removed. I have also noticed a lump on the right side of my throat and also have severe headaches all the time can you please help me with this problem. I am losing my mind to pain and sleeplessness yours sincerely  YYYY@YYYY