I am sorry to hear the pain you are going through. I spent years going through constant obstruction attacks. Most eventually passed after incredible pain. The only pain killer was a morphine based one that disolved under the tongue as all other pills would not be digested and get thrown up.
Numerous times i had to be on IV and diamorphine in hospital.
The last time, after a week of no movement in hospital, they opened me up to have a look. I begged the surgeon to straighten it all out and put the intestine back neatly.
I have not had an obstruction since.
All this caused by having the ileostomy done by an awful surgeon, who threw everything back in, leaving strictures and filamints all tangled. He was the typical old school surgeon, full of himself, condescending, little care for the patient with a gaggle of trainees around him. Yep, i am still bitter, but the last surgeon, unpacked it all, resectioned damaged parts and put it back neatly and treated me like a human being.
I hope you get it resolved. Ask your local doctor for some decent sublingual pain killers until you get out sorted.