Results
Cause of your symptoms
Your rectal bleeding is probably from piles and if your abdominal pain settles quickly it is probably due to bowel spasm.
Advice
Try the treatments outlined below for two weeks. However, if your abdominal pain is preventing any of your activities like 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. Also try careful cleaning of your bottom for your pile symptoms and if necessary creams and suppositories. A pharmacist can advise on suitable treatments.
What now?
If you quickly get better over the next two weeks nothing further needs to be done. However, if your symptoms do not completely resolve or recur after stopping treatment see your GP.
Summary of your symptoms
You are less than 50 yrs old and have abdominal pain associated with weight loss and or a reduction in appetite. You also have rectal bleeding with pile symptoms but no 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 could have a partial bowel blockage and are likely to be referred for prompt investigation in hospital.