My husband did not have bloating after radiation, but has it now. The hospice doctors have explained it as being the progression of the liver disease. As the disgestive system breaks down all functions of eating and processing food become more difficult.
Watch out for constipation. That may be the reason for the bloating.
We thought we had constipation under control because my husband was having regular (even every day) bowel movements, but when the bloating and pressure pain got extreme he had an x-ray and found he was full of bowel material all the way up to his stomach. We had no idea! Treating doctors seem to be so ignorant of this. They prescribe massive amount of pain meds especially during and after treatments and never address the constipating effects of them.
If he has pain meds and doesn't have diarrhea he's probably constipated. Massive amounts of laxative are needed.
Also Gas-x (simethicone) helps. The hospice nurse says it makes the gas bubbles slippery so they don't get as big and cause as much pressure.
Wow, internal radiation followed by nexavar sounds like a pretty aggressive treatment plan. Y90 did a lot for my husband in terms of extending his life with quality time, but he was definitely tired and weak for several weeks after each one.
Please let us know how the next CT turns out. We love good news. Thanks for writing.