i had abdominal pain on the night of migration surgery from the abdomen,
i had terrible pain for months, every day on and off. It eased slightly after about 4 months, but still was very painful when it hit. After 6 months, i had the tube converted to a VA shunt instead of VP, so now the tube leads to my heart instead.
since the operation i havent had ANY abdominal discomfort, so its worth the conversion if your willing to risk the chances of infection from operation.
good luck to all you lot suffering from abdominal pain. =)