Are you taking any other meds? Nausea is a very common medication side effect. And it really could be the Tramadol, in spite of earlier successes with it.

There are other meds that work for nausea. Zofran (ondansetron) works better in some folks.  Maybe ask for a change of meds. Iron and multivitamins can upset the stomach, too. Do you take them on an empty stomach?  That increases the likelihood of nausea. 

There are tons of other meds for nausea. We actually would give Ativan and Benedryl to patients for nausea in the bone marrow transplant and oncology units, with good results.  What about Reglan or Compazine?  Tigan is another one. 

So sorry you are feeling crappy. Maybe you are dehydrated. A few months after my colectomy, I became nauseated all the time (drove me nuts) and the nausea was the start of dehydration. Just a thought  Hope you find relief soon!

Nora, I'm so sorry you are so nauseasted.  After my son's take down he developed an abscess and fistula.  They are extremely painful, at least according to him.  He lost over 100 lbs in the last 12 months, which was great for him!  I would think that they will have to get rid of the fistulia first.  Theses things are nasty.  If you need to put on a few lbs. try ice cream or frozen yogurt.  That might be easy on the stomach.  

Fell better.

d

I think what she means by mucus fistula is that her colon wasn't fully removed so she has two stomas and two ostomy bags(one on each side) and the blood and mucus from her remaining colon goes out through the second opening. I have the same issue, what I've noticed from this forum is the Americans have their surgery in two stages and the UK posters have their surgery in three stages. So there is no sub total colectomy in the USA, I asked my doctor why my surgery was in three stages and he said for safety purposes.

https://www.oakmed.co.uk/wizard/mucousFistula.asp

This is what I've had, I use a pouch instead of a cap because it oozes too much blood and mucus from the UC.They give you suppositories for it but the inflammation comes back so I forgot about it. 

It may be effectively the same thing as a surgically created (intentional) mucous fistula, even though in this case it's a misbehaving GI tract. At any rate, I'm thinking about what might be causing your nausea. Does the fistula smell bad? Was it making you very upset before (or when) the nausea started? Do you have a fever or any other signs of systemic infection?

A common GI cause of ongoing nausea is gastritis. That's normally treated by significant doses of anti-heartburn medication (e.g. Zantac or Prilosec) for a few weeks. Nausea can be the only sign, but do you happen to have a bellyache?