Hi,
I was just diagnosed too about a month ago. I don't have any pain but when I took Lialda and Asacol within a week my stomach hurt so bad. I was ready to go to the ER I couldn't stand it. I stopped taking the medicine and within two days my stomach was better. Also, when I was taking the Lialda and Asacol I was going to the bathroom about 20 times and day. I would usually only go 8-10 times a day(not like that's any better). So, just make sure your stomach pain doesn't get worse. Good luck. I know it is scary.