I have been having similar problems since my total colectomy 5 years ago. I was hospitalized for a handful of blockages and then had surgery for the last major one (ICU) which included component separation surgery to repair a large incisional hernia.
The blockages have never gotten as severe since the last surgery 2 years ago, but I still get the symptoms you describe. I get the same feedback from the medical community that this is really "par for the course" given our altered anatomy and the number of surgeries. So I am managing it as Jan suggested. I watch what I eat very closely, over-chewing and always balancing my intake of meats, fibers, and liquids while also staying aware of the bowel movement feelings and discomfort before it turns to pain so I can make changes a.s.a.p.
Some things I do if I start to feel stuck: absolutely no food, limited water (1 oz/30 min) and a little (4 oz) grape juice will sometimes get things moving if I catch it early; lying on my back with a heating pad and massaging the area can help if I have an issue in one particular spot; GasX chewables help with stuck gas bubbles if I feel bloated; ondanestron helps with the nausea that sometimes accompanies; and when all else fails I take a norco and a valium (5 mg each) and it helps with the more severe pain while relaxing things so the juice and massage might work. I have had to do a second round of all this a couple times, but so far no hospital admissions for blockages in 2 years :-)
Best wishes and I hope your doc can provide some insight for you this week!