Results
Cause of your symptoms
Your abdominal pain and constipation are probably due to functional bowel problems and your rectal bleeding is from piles.
Advice
Try the treatments outlined below for two weeks but if your abdominal pain prevents any of your activities including working or sleeping see your GP.
Treatments
Take laxatives for your constipation and if necessary antispasmodic tablets for your abdominal pain or discomfort. Try to avoid straining too much when you open your bowels and careful cleaning around your bottom creams and suppositories may help your pile symptoms. A pharmacist can advise on which treatments you should try.
What now?
If you get completely better nothing further needs to be done. However, if your symptoms persist for two more weeks or recur after stopping treatment see your GP.
Summary of your symptoms
You are over 50 yrs old and have abdominal pain associated with significant weight loss and or a reduction in appetite. You also have rectal bleeding with pile symptoms and constipation.
Additional information if you see your GP
People who persistently eat less to avoid their abdominal pain and o lose a significant amount of weight may have a partial bowel blockage which requires prompt investigation in hospital.