Hi and welcome to HCM.
wouldnt actually cause bleeding per rectum
. THis isnt something usualy. Most common are rectal lesions such as hemorrhoids,fisurae,angiodislypasie or polyps, and less common but possible are malignancies. If bleeding happens again colonoscopy
or irigography should be performed.Prednisolon has many side efects, its dosage should be adjusted if these sideeffects are intensive. Hiatal hernia
causes swallowing dificulties especially whenn tablets are taken. Also it may cause stomach damage due to raised acid secretion. It can be surgically repaired if necessary.DO gastroscopy at least 1 in 3-4 year to evaluate it.
WIsh you good health.