asdurable:
First don't lose hope. I have had UC for the last 20 years of my life so I know where you are and how you are feeling. I had horrible pancolitis with a lot of bleeding and a lot of urgency. I was going to the bathroom around 10-15 times a day and having accidents here and there. So I know where you are. I went on the Imuran and it took about 2 months to kick in. I have been on it for about 1.5 years and have no problems with it. The imuran has put me into a solid remission, like I never had UC. I knew I was in remission when I forgot about going #2. It had been a few days and I was like, WOW I hope I need to go soon. No urgency now, no blood, no diarrhea, etc... I also know that I am in remission because I like being out of the house and don't care or even think of where a bathroom is.
Please don't lose hope or become discouraged. It takes time. I would definitely recommend using probiotics and using a rectal med to cool down the urgency issue. Stay on the Imuran and give it time.
MyUC