everybody is so very different
I was 24 with my first flare, had it like 4 months or so, and then did not flare for 10 years! then after 2nd flare, i didnt flare for 5 more years! While in remission, I felt completely normal and didnt even feel like I had UC!
My advice: keep a food and symptom diary. add a probiotic and try a fiber supplement.
I have had UC for 19 years, and my most recent flare up has lasted a year and a half. I found that it is very improtant to take the meds your GI prescribes, for me, rowasa and lialda.
where is your uc located? It it is in the proctosigmoid area, rectal meds are recomended.