Results
Cause of your symptoms
Your rectal bleeding is probably from piles and your abdominal pain and change in bowel habit may have been caused by something you have eaten.
Advice
Try the simple treatments outlined below for two weeks but if your symptoms do not settle quickly or your abdominal pain stops you working or sleeping see your GP
Treatments
Eat a simple diet and if necessary take antispasmodic tablets for your abdominal pain or discomfort. It is normal to strain a little when passing a motion but too much can cause bleeding. Try careful cleaning around your bottom for your pile symptoms and if necessary use creams and suppositories. A pharmacist can advise on suitable treatments.
What now?
If you get completely better nothing further needs to be done. However, if your symptoms persist for two more weeks or come back after stopping treatment see your GP.
Summary of your symptoms
You are under 50 years old and have abdominal pain associated with loss of weight and or a reduction in appetite, rectal bleeding with pile symptom and a non-specific change in bowel habit
Additional information if you see your GP
People who persistently eat less to avoid their abdominal pain and or lose a significant amount of weight may have a partial bowel blockage which requires prompt investigation in hospital.