Thanks for writing in.
From your details, it looks like you have been in hospital for a while post yout hernia
mesh repair surgeries.
Generally, after surgeries, patient is slowly started on regular feeds and bowel rest is given. In some patient, constipation
results from being confined to hospital stay and during the post op period. Hence the appearance of blood and mucus in stools.
It is also likely that you are being given feeds which are mucus forming right now.
Please inform your doctor and dietician about it.
Hope this helps.