I am so sorry for your pain. We should not need to seek out multiple doctors for answers. I am 65, I have finally realized that I was required to have more continuing education as an Enrolled Agent to prepare taxes, than drs do....so my opinion is most drs don't care enough about us to know what is the most effective, beneficial and up to date treatments.
You are saying you have snake formed poop 15x day? How long is each snake? Do they desinegrate when you flush? I have not had a formed snake in 10+ years.
Has anyone thoroughly investigated your adhesions? I have read that adhesions, from any core surgeries, probably are factors in fecal impactions-full blockages.