What to ask your doctor about side effects of stomach or pelvic radiotherapy

Some questions you might ask your doctor

What side effects can I expect from radiotherapy to my stomach or abdomen or pelvis?
Will I need to change my diet completely?
Can the dietician help me find out more about what to eat and drink?
What about diet after treatment has finished?
Are there any long term side effects of this treatment?
Could this treatment affect my bladder?
Could this treatment affect my bowel?
Who should I contact if I get side effects?