Tortuous Colon

I am 30 years old and have been suffering with constipation for the last 5 years so I feel your pain!! My issues consist of gas, TERRIBLE gas pains, bloating (to the point I dont fit in my clothes and look pregnant), stomach aches, unable to eat dairy or meat (cause it adds to the gas and digestive issues), girggling/trapped air in my chest, chest pains and the worst of them all.. constipation!!

I have had many tests done on me.. to find out the following so far..

1.) Sigmoidoscopy = hemmrhoids internal due to straining, some irritation and redness but biopsies say no cancer
2.) Upper scope = some irritation and redness but biopsies say no cancer
3.) Mannometry = lower esophagus is weak causing the trapped air and pains (taking Aciphex and Gas X for this, avoiding gas causing/acid causing foods)
4.) Empty Stomach Study = stomach is emptying into my bowl a little slower then avergage but still in the normal range
5.) Physical Therapy for pelvic floor dysfunction = possible issue with relaxing my muscles in order to go to the bathroom but therapy did not help my issues go away. Still not the cause of constipation but could be caused by it.
5.) Colonoscopy = torturous colon.. my GI dr was not able to complete the whole thing.. she got to my ascending colon and had to stop. She says surgery is not needed unless there was a knot or blockage but this definitely is why I am experiencing gas, upset stomach and bloating. It can also contribute to my constipation but she believes that my constipation for 5 years is what caused the torturous colon because I did not start experiencing these issues until 5 years ago. She put me on a high dose of Amitiza 2 times a day (as the Fiber and Miralax seem to make my condition worse and are hard to manage with this issue)… but I have been on that for 3 weeks and the side effects are starting not to be worth the medication (I randomly feel like I have the full blow flu since taking it.. aches, pains, nausea, chills, headache, hot flashes/face is hot like I have a fever).. and it still takes me over a week before I have a BM.. 

Now my thing is ok we know what the constipation is causing and doing to my body.. which now this torturous colon is a whole new thing to add to the list.. but……… why is the constipation happening to begin with???

She said she wants me to have a barium test xray to double check the parts of the colon she was not able to see in the colonoscopy to make sure there are no blockages etc. I am so physically and mentally drained from all these tests and all the prep that goes along with all of them….And then if that does not work and the amitiza does not help she wants me to have a bacteria test of some sorts.. where you breath in this bag thing and they can see if they should put you on antibiotics for gut bacteria to regulate you.

5 years of my stomach running my life and I feel every road is a dead end.

Does anyone know the real reasons as to why surgery is not an option for a torturous colon?? It seems its only an option if you have a emergency knot or blockage that forms?? Why not have a surgery that provents that from happening al together?