Hello Pattikins,
I'm a colorectal cancer survivor as well and have had my colostomy since 2002. I had some severe stomach cramps shortly after my surgery and questioned my surgeon as to why. He attributed it to scar tissue as well and just told me I would have to live with it. I have continued to have more episodes over the years, some so severe that I would end up curled up in the fetal position on the floor in severe pain, and I got to the point where the only relief I could get from the pain was to make myself throw up. It doesn't seem to be any rhyme or reason as to what brings them on. I've even irrigated when I felt an episode coming on and that never made any difference. I consulted several other doctors and all of them pretty much give me the same answer, that it was more than likely scar tissue from the surgery. They told me I could have surgery to remove the scar tissue, but that to keep in mind that more surgery could result in more scar tissue over the years again.
My colostomy is on my left side and the pain always seems to start on the opposite side. I have learned over the years that when I feel an episode coming on I will massage the area for a while where the pain is starting and, knock on wood, it seems to prevent the problem from escalating further. Also, I'm not sure if this makes any difference or not, but I also make sure to drink plenty of water (between 64 and 96 ounces) every day. By doing both of these things and following this protocol over the last 3 years has eliminated any further episodes. I hope this helps. Best of luck
Greg