Sounds like you had sepsis. Good thing you were already in the hospital. I had a similar episode about a week post op. Luckily, I too, was still in the hospital. Two days after my operation, total colectomy with end ileo, the resident surgeon told me I could eat...so...eat I did ....mmmm so good going down.....not so good coming up . My surgeon ordered the ng tube to be placed back down. That really helped me a lot, but a few days after the ng tube came out is when I had the episode similar to yours. However, my BP plummeted down....waaay down. The night nurse couldn't get a reading. All I can recollect is being extremely tired and wanting to sleep. Of course, that never happened. The nurses, technicians and doctors kept me up all night running this test and that test. I didn't have the two tubes on either side though. I just had the one jp tube and they kept that in till the morning I went home. I know I had IV's going in both arms and had a heck of a time trying to pee, even with the port a pot right next to the bed.
What I don't understand is...if you don't have your large intestine, don't you have an ostomy? Do you have a wound nurse coming to your house? You really should have someone to stay on top of things until you are more stable. This is just my own humble opinion.