I agrree with esoR. My doc would never consider giving me barium. And, when I have a blockage, they don't let me leave until both gas and b.m. pass. I am so sorry you are going thru this....
I was 21 when the symptoms began and wasn't diagnosed until 7 years later. If there is any good news for you, it is that the diagnostic tools and treatments have improved greatly. Thirty nine years...