I am so sorry to hear about all of the suffering through which you are going. That sounds absolutely awful!
I do not have opioid-induced constipation but I do have that problem.
I find when I have a Super Smoothie every morning with these ingredients I have a BM everyday:
Pea protein powder, soy milk, almond milk, blueberries, strawberries, bananas, avocados, green superfood powder and ground flaxseed.

Ground flaxseed may be the most helpful ingredient because it goes through the intestinal tract and into the little pockets and cleans them out. It kind of scrapes them like a sponge with a rough side on a dish with stuck on burnt food.😲

And of course you probably already know about drinking plenty of clean water. And by clean I also mean do not drink out of plastic containers because you will get poisons into your body that will make it not work correctly.

I sincerely hope that you can find some solutions that are extremely helpful for you.
Godspeed, blessings and peace to you from your friend, Karah 🧡🕊️ 🌈

I understand the causes issue...I find my many diagnosed illnesses did not happen all at once but all have progressed due to repeat trauma, falling, meds, age and degenerative process. I used to have more internal pain and constipation issues when I was on opiates. Never as bad as yours poor dear...but sometimes I get pain up my arse for no apparent reason and it is very painful. I kinda think mine is connected to nerve and musculoskeletal issues from my back and neuropathy. Bug your dr...they need to help us!!

If it were me for now i would do what you are already doing for a bit longer and see if it gets better.try foods that will help maybe with your bm. If things arent going any better talk to your dr.as far as sleeping at night will be better once you are able to overcome some of your other issues.meds can stop you up .but as long as you hurt sleep will be hard.once you can get over other humps you should get better.try prunes and try some ttomato or veggy juice.im just making suggestions.move around as much as you areable or allowed.i hope i was able to help some.ill be praying for you.god bless.make sure when you see your dr that they realy listen to you and are realy trying to help you.hop everything goes good.

Drink lots of water daily. It certainly helps with all constipation. I’ve been on pain meds for years and this happens periodically.

Ì also have a tight butt-hole especially in the mourning, I've been eating raisin bran, sometimes the cramps get worse and getting started is quite painful at times , however a strong inner push is what I needed , other than eating fruits and raisin bran there are stool softeners I only use if everything else fails. Take care