Mine is primarily in my large intestine, so it's like a weird combination of Crohn's and UC, which could be why it causes so much nausea. Remission for me was just sort of luck and time. I was first diagnosed at 28, was on a ton of steroids followed by about 20 years of Imuran. After a colonoscopy my GI doctor said that my colon shows no sign of damage anymore and that since Imuran increases risk for cancer that I should consider trying to reduce my dosage. After about a year of reducing I was totally off with no return of symptoms. Now I'm just on mesalamine. So, TL;DR, I got lucky. Good luck with your treatment.